Saturday, 1 June 2019

End of Season

Aberystwyth Chess Club is now adjourned for the summer. Club nights will resume in September.

Monday, 27 May 2019

Last Two Matches

As the season draws to a close, Aberystwyth has played its last two Dyfed League matches, with good results. On Monday 13 May, the club had a home match against Carmarthen. Top board Rudy van Kemenade played an unusual formation against Gerry Heap's English Opening, hoping to lure his opponent into a premature attack. The White king became exposed and the game ended with a sudden tactical coup, a good win for Rudy against a very strong opponent. Adam Watkin-Jones's game against David Buttell was also an English, this time by transposition, and once again the Carmarthen player overpressed, creating too many weaknesses and allowing White to invade his position. It was an evening for the hypermodernists, as Julie van Kemenade faced Paul Orton's 1.Nf3 and a slow, careful White development, which didn't allow her an entry point for some time. When things opened up, however, the game finished quickly with a tactical error by White. My own use of an English-like system against the Sicilian is beginning to feel counter-productive. Against Robert Narayan-Taylor, I expanded my position slowly and found weaknesses appearing all over the board. A Black error left me a piece up in a game I should already have lost, but by now I was very short of time, and agreed a draw, The match finished 3½-½ to Aber.

Adam Jones was left without a Board 2 opponent in the match against Cardigan B on Monday 20 May, as Howard Leah was missing. On top board Rudy had a tough battle in the Petroff, playing the White side for once, against Ben Brewer. Black's miscalculated combination left White a pawn up but the knight versus bishop ending required careful play before Rudy was able to secure the point. The bottom board game between James Cook and Awne Osinga was a quiet draw in the Caro-Kann. My Board 3 game against Joshua Brewer was another draw, but anything but quiet. I played the fork trick in the Three Knights Game, and got a strong attack, but a series of weaker options allowed him to counterattack on the kingside. In desperation, I sacked the exchange and looked for a while as if I was forcing mate, but it wouldn't have worked out, even with best play. An exciting game in which both sides made mistakes eventually settled into a drawn ending. The match finished 3-1 to Aber with the default on Board 2. With one match still to play in the League, Cardigan A have already regained the championship, which Aberystwyth held last year. We finish second, and Aberystwyth University are an excellent third, after a fine first season which included a win in their first ever derby match against the town team.

[Event "Dyfed League:Aberystwyth-Carmarthen"] [Site "?"] [Date "2019.05.13"] [Round "?"] [White "Heap, G."] [Black "Van Kemenade, R."] [Result "0-1"] [ECO "A10"] [WhiteElo "2195"] [BlackElo "2021"] [Annotator "kemen"] [PlyCount "76"] [EventDate "2019.05.14"] {[%evp 0,5,19,-12,29,-17,21,33]} 1. c4 (1. Nf3 d6 2. d4 c6 3. e4 Nd7 4. Nc3 h6 5. a4 Qa5 6. Bd2 g5 {IC Jones-Van Kemenade, Dyfed League 2019,0-1}) 1... d6 ( 1... e5 2. g3 h5 3. Nf3 e4 4. Nd4 Nc6 5. Nxc6 dxc6 6. Bg2 Nf6 7. Nc3 Qd4 8. d3 exd3 9. Qxd3 Qxd3 10. exd3 Bf5 $15 {Heap-Van Kemenade,Dyfed Closed 2018,0-1}) 2. g3 c6 3. Bg2 Nd7 4. Nc3 h6 {the Elshad System, trying to provoke Wh into a premature attack} (4... e5 {main}) (4... g5 5. h4 g4 6. d4 Bg7 7. e3 h5 8. Nge2 Ngf6 9. b3 O-O 10. Bb2 e5 11. Qc2 Re8 12. O-O-O {Brodsky (2333)- Larionov ( 2049), Moscow 2014,1-0. Komodo12- definite plus for Wh, equal Stockfish10}) 5. b4 (5. Rb1 {anticipated by Rudy in pre-game planning as these first 5 moves have been played by Gerry before against varying Bl setups}) 5... a5 {to blockup the Q side entirely & avoid Wh's normal style of play} (5... g5 6. b5 c5 {alternative} (6... cxb5 7. cxb5 Bg7 {Stockfish10})) 6. b5 c5 7. e3 { hoping to regain bl square control} Ne5 8. d3 Bf5 9. e4 {initial choice of the Engines} (9. Bxb7 Nxd3+ 10. Kf1 Ne5 11. e4 Be6 12. Bxa8 Bxc4+ 13. Kg2 Qxa8 14. Qa4 Be6 15. Rb1 $16 {Stockfish10 & Komodo`12; but Bl has some K side chances}) 9... Bg4 10. Qc2 (10. f3 {Engines; avoided by Wh so as not to obstruct the B, happens later anyway}) 10... g5 11. h3 Bd7 12. Nge2 (12. f4 gxf4 13. gxf4 Ng6 { is very loosening around the Wh K side}) (12. Bb2) 12... g4 13. hxg4 Bxg4 14. Ng1 Bg7 15. f3 Bd7 16. Nge2 Nf6 (16... a4 {Stockfish10, considered}) 17. Nf4 e6 (17... a4 {considered} 18. Nxa4 (18. a3 {Stockfish10}) 18... Qa5+ 19. Nc3 Nxe4 20. fxe4 Nf3+ 21. Kf1 Qxc3 22. Qxc3 Bxc3 23. Rb1 Nd2+ 24. Bxd2 Bxd2 $17) (17... h5 {also}) 18. Be3 (18. Bb2 {Stockfish10} h5 19. O-O-O h4 20. Kb1 hxg3 21. Rxh8+ Bxh8 22. Rh1 Ke7 (22... Bg7 {are both still complicated, though Stockfish10 gives wins for Wh})) 18... Qe7 {looking at d5 as a possibilty} ( 18... h5 19. O-O-O Qc7 20. Na4 Ke7 (20... b6) 21. Kb1 b6 {still very complex, Plus for Wh Komodo12, win for Wh Stockfish10}) 19. Na4 (19. O-O-O {Stockfish10, expected by Bl}) 19... Ng6 (19... Nfg4 20. Bg1 {doesn't get very far}) (19... h5 $5) 20. Nb6 Rb8 (20... Nxf4 {Stockfish10} 21. gxf4 (21. Nxa8 Nxg2+ 22. Qxg2 Qd8 23. O-O-O Qxa8 $11) 21... Rd8 22. O-O-O Bc8 23. d4 Nd7 24. dxc5 Nxb6 25. cxb6 $18) 21. Rd1 (21. O-O-O {Rudy & Stockfish10- Instead Wh tries for an immediate breakthrough to punish Bl's unorthodox opening. In what happens though, Bl's K is safer than Wh's}) 21... Qd8 22. Nxd7 (22. Nxg6 fxg6 23. d4 cxd4 (23... Qxb6 24. e5 O-O 25. exf6 Rxf6 26. dxc5 Qd8 27. Rxd6 e5 28. Bxh6 Rxd6 29. cxd6 Qf6 30. Qd2 $18) 24. Bxd4 e5 (24... O-O 25. Nxd7 Qxd7 26. e5 dxe5 27. Bxe5 Qf7 28. Bxb8 Rxb8 29. O-O $18) 25. Bf2 Be6 26. O-O Qc7 27. Rd3 O-O 28. Rfd1 Ne8 29. a4 {Stockfish10}) 22... Qxd7 (22... Nxd7 {keeps control over e5, but} 23. Nh5 {is a nuisance} Bd4 (23... Bf8 24. d4 $18) 24. Bxd4 cxd4 25. f4 $16) 23. Nxg6 (23. d4 {expected, may be better} Nxf4 24. gxf4 Qe7 25. dxc5 dxc5 26. e5 Nh7 27. Rd6 b6 28. Rc6 Nf8 29. Ke2 h5 30. Bh3 f5 31. exf6 Qxf6 {is the kind of position Engines relish, though it faces humans with very difficult choices, especially with clocks ticking away} 32. Rb1 Qh4 33. Rc7 Qxh3 34. Qe4 Qg2+ 35. Bf2 Rd8 36. Qc6+ Rd7 37. Rg1 $18 {Stockfish10}) 23... fxg6 24. e5 (24. d4 cxd4 25. Bxd4 Qf7 26. f4 O-O 27. O-O Nh5 {another complex position considered in pm analysis} 28. Bf2 g5 29. e5 gxf4 30. exd6 Kh8 31. c5 Qg8 32. Qd2 Nxg3 33. Bxg3 fxg3 34. d7 $18 {Komodo12}) 24... dxe5 25. Bxc5 b6 26. Be3 ( 26. Bf2 {Rudy looks safer, both Engines} Qc7 27. O-O Kf7 28. a4 h5 (28... Bf8)) (26. f4 {Gerry & pm analysis} Kf7 27. Bc6 Qc7 28. Ba3 exf4 29. O-O Nh5 (29... g5 30. d4 Rhd8 31. gxf4 gxf4 32. Bc1 e5 33. dxe5 Qxe5 34. Bxf4 Qc5+ 35. Kg2 Rbc8 36. Bg3 Kg8 37. Rxf6 Bxf6 38. Qg6+ Bg7 39. Bd7 Rf8 40. Be6+ Kh8 41. Rd7 Qg5 42. Rxg7 Qxg6 43. Rxg6 Kh7 44. Rg4 Rce8 45. Bd5 $18 {Engines make life look simple}) 30. d4 Rhd8 31. d5 Qe5 32. Rfe1 Qg5 33. dxe6+ Kg8 34. e7 Rxd1 35. Rxd1 Nxg3 36. Qg2 $18 {Stockfish10}) 26... Nh5 (26... Qf7 {safer}) 27. d4 Qf7 28. Qf2 {looks ok, defending and threatening, but now it seems the tide turns} (28. Bf2 exd4 29. f4 O-O (29... Rg8 30. Bh3 Ke7 31. O-O $18) 30. Be4 Nf6 31. Bxg6 Qb7 32. O-O Ng4 33. Bxd4 e5 34. Be4 Qc7 35. Qe2 h5 36. Bd5+ Kh8 37. fxe5 Rxf1+ 38. Rxf1 Bxe5 39. Be3 Bg7 (39... Bxg3 40. Rf5 $18) 40. Rf4 Rf8 41. Rxg4 hxg4 42. Qh2+ Bh6 43. Qxh6+ Qh7 44. Qxf8+ Qg8 45. Qxg8# {Stockfish10}) (28. Rxh5 gxh5 29. dxe5 O-O 30. f4 Kh8 31. Ke2 Rg8 32. Bc6 Bf8 33. Rd7 Be7 34. f5 Qh7 35. Be4 Rxg3 36. Bf2 Rg4 37. Qd3 $18 {Stockfish10}) 28... exd4 $11 29. Bxd4 e5 (29... O-O 30. O-O $11) 30. Bxb6 (30. Be3 O-O $11 (30... Qxc4 31. Bf1 Qc3+ 32. Bd2 Qc2 33. Qe3 $14 {Stockfish10})) 30... Qxc4 {the Wh K is now vulnerable in the middle} 31. Bxa5 (31. Rh4 $1 {Stockfish10, solves the Wh piece mobilization} Qc3+ (31... Qxb5 32. Bc7 O-O 33. Bf1 Qb2 34. Bxb8 Qxb8 35. Re4 ( 35. Rc4 e4 36. f4 g5 $11) 35... g5 $14) (31... Nf4 32. gxf4 Qb4+ 33. Rd2 Qb1+ 34. Rd1 Qb4+ $11 {Stockfish10}) 32. Kf1 O-O 33. Kg1 Nxg3 34. Rg4 Ne2+ 35. Qxe2 Rxb6 36. Rc4 $11 {Stockfish10}) (31. Qc5 Qxc5 32. Bxc5 Rxb5 33. Bf2 O-O 34. O-O $15 {Stockfish10}) 31... Qxb5 $15 {Wh was now getting very low on time} (31... Rxb5 $2 32. Rd8+ Kf7 33. Qa7+ Kf6 34. Rd6+ Kg5 35. Bd2+ {mating}) 32. Bc3 (32. Bd2 O-O $17) (32. Bc7 {Stockfish10} Qb4+ (32... Rc8 33. Bd6 Qa5+ 34. Qd2 (34. Kf1 Qa4 (34... Rd8 35. Rxh5 (35. Kg1 Bf8 $19) 35... gxh5 36. Qe2 Bf8 37. Bxf8 Rxf8 38. Rxd8+ Kxd8 39. Qd3+ Ke7 40. Qh7+ Rf7 41. Qxh6 Qxa2 $15) 35. Ke1 Rc2 36. Qb6 Nxg3 $15)) 33. Qd2 Qxd2+ 34. Rxd2 Rb7 35. Bd6 Nxg3 $15) 32... O-O $19 33. a3 (33. Rxh5 gxh5 34. Qe3 h4 35. gxh4 Rf7 $19 {is the best Stockfish10 finds for Wh}) 33... Rfd8 (33... e4 $1 {Stockfish10- considered} 34. Bxg7 exf3 35. Rxh5 (35. Bxf3 Rbe8+ 36. Kd2 Nxg7 $19) (35. Bxf8 Re8+ {missed by Bl in looking at this variation} 36. Kd2 Qb2+ 37. Kd3 Qxf2 $19) 35... Rbe8+ $1 36. Be5 (36. Re5 Kxg7) 36... Qa5+ 37. Qd2 fxg2 38. Qxa5 g1=Q+ 39. Kd2 Rd8+ 40. Bd6 Rxd6+ 41. Rd5 Qf2+ 42. Kc1 Rc6+ 43. Kb1 Rb8+ {mating}) 34. Qa2+ Kh7 (34... Kh8) 35. Rxd8 Rxd8 36. Qc2 (36. Rxh5 Qc5 $1 (36... gxh5 37. Bb4 e4 {more human}) 37. Bb4 Qg1+ 38. Bf1 Qxg3+ 39. Qf2 Qxf2+ 40. Kxf2 gxh5 $19 {Stockfish10}) 36... Nxg3 37. Rh3 Nf5 38. Bf1 (38. Bd2 Nd4 39. Qd1 (39. Qe4 Qb2 40. Rh2 Nc2+ 41. Kd1 Nxa3 $19) 39... Nb3 $19 {Stockfish10}) 38... Qxf1+ {cashing in, though , as Bl suspected, Stockfish10 thinks Bl has even better} (38... Qc5 $1 39. Qc1 Qg1 40. Bd2 Rd3 (40... Ng3 41. Qc4 Rxd2 42. Kxd2 Nxf1+) 41. a4 e4 42. fxe4 Ng3 $19 ( 42... Rxh3 43. exf5 Qg3+) 43. Rxg3 Qxg3+ 44. Kd1 Qf3+ 45. Kc2 (45. Ke1 Be5) 45... Qxe4 46. Kd1 Qf3+ 47. Kc2 Rd7 $19 {Stockfish10}) 0-1 [Event "Dyfed League: Aberystwyth - Carmarthen"] [Site "Tanygroes"] [Date "2019.05.13"] [Round "?.2"] [White "Watkin-Jones, A."] [Black "Buttell, D."] [Result "1-0"] [ECO "A24"] [WhiteElo "1928"] [BlackElo "1888"] [Annotator "kemen"] [PlyCount "85"] [EventDate "2019.??.??"] {[%evp 0,85,16,13,20,-12,12,-6,10,10,25,23,17,28,32,32,39,20,61,46,70,62,60,36, 41,49,49,24,20,5,5,5,5,13,15,10,43,36,96,74,110,111,135,116,103,70,74,49,88,14, 45,45,65,65,68,70,231,193,324,333,337,344,321,306,304,324,356,348,386,393,410, 400,425,413,413,421,447,404,537,429,492,511,614,619,622,667,731,731]} 1. Nf3 Nf6 2. c4 d6 (2... b6 3. g3 Bb7 4. Bg2 g6 5. O-O Bg7 6. Nc3 O-O 7. d3 d6 8. h3 Nbd7 9. e4 e5 {Taylor-Buttell,Dyfed Open 2017,1-0}) (2... g6 3. g3 Bg7 4. Bg2 O-O 5. d4 c5 6. O-O cxd4 7. Nxd4 Nc6 8. Nc3 Nxd4 9. Qxd4 d6 10. e4 Ng4 11. Qd3 Ne5 12. Qe2 Be6 13. Nd5 Rc8 {D Williams-Buttell, Open Jamboree 2007,0-1}) 3. g3 g6 4. Bg2 Bg7 5. O-O O-O 6. Nc3 Nbd7 {normally Dave has engaged in a QGD exchange, as either Bl or Wh} 7. d3 {remains an English} (7. d4) 7... e5 8. Rb1 Nh5 (8... a5) (8... Re8 {main lines}) 9. b4 f5 10. Qb3 Kh8 11. Ng5 Ndf6 12. c5 Qe7 13. cxd6 cxd6 14. Nd5 {4 Wh wins, 3 draws in this position} Nxd5 15. Bxd5 h6 (15... Nf6 16. Nf7+ Kg8 17. Nxd6+ Nxd5 18. Nxc8 Raxc8 19. Qxd5+ Kh8 20. Qb3 {Egedi-Navarovszky, Budapest FS09 IM ,1995,1-0}) 16. Ne6 Bxe6 (16... Rf6 17. Nxg7 Kxg7 18. Bd2 f4 19. Bf3 Bh3 20. g4 $18 {Hujo-Lukac,Brazova op, Brazova pod Bradlom 2009,1-0}) 17. Bxe6 Rf6 $146 (17... f4 {2 Wh wins, 1 draw}) (17... Nf6 $14 {Cloud Engines} 18. b5 Rae8 19. Bc4 f4 20. Ba3 Qd7 21. Bd5 e4 22. Bxe4 Nxe4 23. dxe4 Rxe4 24. Qd3 Rfe8 (24... Rxe2 $17 {Cloud Engines}) 25. b6 axb6 26. Rxb6 Rxe2 27. Rxd6 Qf5 {Szabo-Najdorf, Amsterdam ol 1954, draw agreed}) ( 17... Rad8 18. Bd5 Nf6 19. Bg2 Rc8 20. Be3 b6 21. Rfc1 Rxc1+ 22. Rxc1 f4 23. Bd2 $16 {Flesch-Magyar, Gecsei memorial, Pecs 1955,1-0}) 18. Bd5 {Stockfish10} (18. Bc4 {Komodo12}) 18... Raf8 (18... Rff8 {both Engines}) 19. Bb2 (19. Bd2 $18 {Komodo12}) (19. b5 $18 {Stockfish10}) 19... g5 (19... f4 {Stockfish10} 20. g4 f3 21. e3 Rf5 22. Kh1 Rg5 23. Rg1 Nf6 24. Bxf3 h5 $14 {Komodo12}) 20. Rbc1 $18 {Komodo12, but Bl still has forces ranged against the K} g4 21. e3 (21. Qa4 b6 22. Qc2 f4 23. a4 Rf5 24. Be4 Rg5 25. Qc7 $18 {Komodo12}) 21... Rg6 22. f4 ( 22. Rc2 $18 {both Engines, the invasion on c7 stops any real K side attack by Bl}) 22... gxf3 23. Bxf3 Nf6 (23... Nxg3 24. hxg3 Rxg3+ 25. Kf2 $16 (25. Bg2 f4 $11) 25... Qh4 26. Ke2) 24. Qc4 (24. Qc2 Ng4 25. Qe2 h5 26. Rc3 Bh6 27. d4 h4 28. Bxg4 Rxg4 29. Rxf5 Rxg3+ 30. hxg3 {Komodo12} Rxf5 $11) 24... h5 (24... Ng4 25. Bxg4 Rxg4 26. Qc7 Qxc7 27. Rxc7 Rxb4 28. Ba3 Ra4 29. Bxd6 Rd8 30. Be7 Rxd3 31. a3 b5 $11 (31... f4 $11)) 25. Qc7 Qxc7 (25... Qe6 {= Stockfish10, slight Wh advantage Komodo12}) 26. Rxc7 h4 (26... Bh6 27. Bc1 Rg7 $11 {both Engines}) 27. Kg2 (27. Bxb7 $16) 27... e4 {a final attempt, but it leaves Wh on top} ( 27... Bh6 28. e4 f4 29. g4 Nxg4 30. Kh3 Ne3 31. Rfc1 Rg7 32. d4 $16 {Komodo12}) 28. dxe4 $18 fxe4 (28... Ne8) 29. Bxe4 Rg4 30. Rf4 Rxf4 31. exf4 Re8 32. Bf3 hxg3 33. hxg3 Rd8 34. Rxb7 Rc8 35. Bd1 (35. Kh3 Rc2 36. Bxf6 Bxf6 37. Kg4 (37. Rxa7 $18)) 35... Ne8 36. Bxg7+ Nxg7 37. Rxa7 Nf5 38. Bb3 (38. Bg4 Ne3+ 39. Kf3 Nxg4 40. Kxg4 Rb8 41. a3) 38... Rc3 39. Ra8+ (39. b5) 39... Kh7 (39... Kg7 40. Rg8+ Kh7 41. Rg5 Nd4 42. Bd5 $18) 40. b5 Rxg3+ 41. Kf2 Rg7 42. Bc2 Kg6 (42... Rf7 43. b6) 43. Rf8 1-0 [Event "Dyfed League:Aberystwyth-Carmarthen"] [Site "?"] [Date "2019.05.13"] [Round "?"] [White "Orton, P."] [Black "Van Kemenade, J."] [Result "0-1"] [ECO "C41"] [WhiteElo "1532"] [BlackElo "1761"] [PlyCount "64"] [EventDate "2019.05.14"] {[%evp 0,14,80,7,83,69,69,71,98,60,64,47,80,60,32,18,27]} 1. Nf3 d6 2. d4 Nd7 3. e4 e5 4. Be2 (4. Bc4 {main} c6 5. O-O) 4... Ngf6 5. Nc3 c6 6. dxe5 { releasing the tension in the centre gives Wh no more than a level game} (6. O-O ) 6... dxe5 7. Bg5 (7. O-O {main}) 7... Be7 8. O-O Qc7 (8... O-O) 9. Re1 h6 ( 9... Nc5 10. Bxf6 Bxf6 11. Qd2 Be6 12. Qe3 b6 13. Ng5 Qe7 14. Nxe6 Nxe6 15. Bd3 O-O {Jacob-Zahneisen, Baden ch women,Endlingen 1987,0-1}) 10. Bh4 Nf8 11. Bg3 ( 11. h3 g5 12. Bg3 Ng6 13. Qd2 Be6 14. Rad1 Rd8 15. Qc1 Rxd1 16. Rxd1 Nf4 17. Qe3 b6 18. a3 O-O {Couceiro Perez-Gil Lores, San Miguel ch,revias 2001,0-1}) 11... Ng6 $15 {Stockfish10} 12. h3 (12. Nd4 $5 O-O 13. Nf5 Bc5 14. Bd3 Re8 15. Qf3 Nf4 $11) 12... Be6 (12... Nh5 13. Bxe5 Nxe5 14. Nxe5 Qxe5 15. Bxh5 Bd6 16. Bg4 Qh2+ 17. Kf1 O-O 18. Bxc8 Raxc8 19. Qg4 Rce8 $11 {Stockfish10}) 13. Bf1 Rd8 14. Qe2 Nh5 15. Bh2 Nhf4 $15 16. Qe3 b6 17. Rad1 O-O (17... Bc5 18. Qc1 b5 19. Ne2 O-O $15 {Stockfish10}) 18. Rxd8 Rxd8 19. Ne2 Bc5 20. Qc1 (20. Qc3 Qd6 21. a3 b5 22. Nxf4 exf4 23. b4 Bb6 24. Bd3 Qd7 $15 {Stockfish10}) 20... Nxe2+ 21. Bxe2 Nf4 (21... f6 {Stockfish10, secures e5}) 22. Bf1 (22. Nxe5 Qxe5 23. Bxf4 Qxe4 24. Bg4 Qg6 (24... Qa4 25. Bxe6 fxe6 26. a3 Qc4 27. Bg3 $11) 25. Bxe6 fxe6 26. Re2 $11) 22... g5 23. Rd1 a5 (23... Re8 {preserves a R for a potential attack on the g file-Wh has no real entry squares on the d file}) 24. a3 Qe7 25. Rxd8+ (25. Nxe5 Bxf2+ 26. Kxf2 Rxd1 27. Qxd1 Qc5+ 28. Kf3 Qxe5 29. Qd8+ Kg7 30. Qxb6 f5 31. Qa7+ Kf6 32. Qe3 fxe4+ 33. Kf2 Ke7 34. Kg1 Qxb2 35. Qxe4 Qxa3 36. Bxf4 gxf4 37. Qxf4 $11 {Stockfish10}) 25... Qxd8 26. Qd2 (26. c3 $11) 26... Qf6 (26... Qxd2 27. Nxd2 a4 28. Bc4 Bd7 29. Kf1 Kf8 $15 {Stockfish10}) 27. Qc3 g4 (27... a4 28. b4 (28. Qxe5 Nxh3+ $19) (28. Nxe5 Nxh3+ 29. Kh1 Nxf2+ 30. Kg1 Nh3+ 31. Kh1 Qxf1+ 32. Bg1 Qxg1#) 28... axb3 29. cxb3 Bd6 30. Qxc6 Bxa3 31. Bc4 Bc5 32. Bxe6 Qxe6 33. Qxe6 fxe6 34. Nxe5 Ne2+ 35. Kf1 Nd4 36. f4 gxf4 37. Bxf4 Kh7 38. Nd7 Nxb3 39. Ke2 $11 {Stockfish10}) 28. hxg4 Bxg4 29. Bg3 {worrying about the safety of f2} (29. Qxe5 $1 {Stockfish10} Nh3+ 30. gxh3 Qxf3 31. Bg3 Be6 32. Bg2 Qd1+ 33. Kh2 $16 Qxc2 $2 (33... Qd2 34. Qf6 Qg5 35. Qc3 $16) 34. Qf6 $18 {the threat is Be5} Kf8 35. Qd8+ Kg7 36. Be5+ Kh7 37. Qh8+ Kg6 38. Qg7+ Kh5 39. Bf3+ Kh4 40. Bg3#) (29. Bxf4 Qxf4 30. b4 axb4 31. axb4 Bf8 32. Qxc6 Bxf3 33. gxf3 Bxb4 34. Qxb6 Qg5+ 35. Bg2 Qc1+ 36. Bf1 Qg5+ $11) 29... Bxf3 30. gxf3 (30. Qxf3 {is not that dangerous for Wh} Nh3+ 31. Kh2 Qxf3 32. gxf3 Ng5 33. Kg2 Bd6 34. Ba6 Kg7 35. Bb7 c5 36. Bd5 $11 {Bl has a spare h pawn, but it will be difficult to force through}) 30... Qg5 (30... Bd4 31. Qd2 Qg5 32. Kh1 Qh5+ 33. Kg1 Nh3+ 34. Bxh3 Qxh3 35. Bf4 Qxf3 36. Bxh6 Qg4+ 37. Kf1 Bxb2 $17 { Stockfish10}) 31. b4 $2 {trying to drive away the B comes too late.} (31. Kh1 Bd4 32. Qxc6 Qh5+ 33. Kg1 Qxf3 34. Kh2 Kg7 $17 {survives for the moment, though it requires a lot of accurate defence}) 31... Qxg3+ 32. Kh1 Bxf2 0-1 [Event "Dyfed League: Aberystwyth - Carmarthen"] [Site "Tanygroes"] [Date "2019.05.13"] [Round "?.4"] [White "Francis, Matthew"] [Black "Narayan-Taylor, R."] [Result "1/2-1/2"] [ECO "A36"] [WhiteElo "1712"] [BlackElo "1368"] [Annotator "kemen"] [PlyCount "114"] [EventDate "2019.??.??"] {[%evp 0,114,28,28,40,23,9,14,14,-20,-30,-18,14,2,2,-5,7,-2,14,-12,-6,-15,-7, -14,-19,-23,16,-40,-24,-92,-55,-64,-26,-52,24,-13,19,-45,42,-39,-39,-24,-15, -87,1,-122,-115,-148,-151,-144,-151,-185,-217,-211,-203,-203,-146,-163,-142, -137,-135,-143,-93,-110,-115,-172,-128,-146,-95,-103,-91,-87,-85,-89,-37,-30, -10,-27,-40,-48,24,23,15,32,239,221,237,241,262,225,222,230,238,237,258,260, 287,254,265,268,298,296,289,302,304,314,322,322,349,364,364,364,364,364,408, 364,413]} 1. e4 c5 2. c4 g6 3. Nc3 Bg7 4. g3 Nc6 5. Bg2 e6 (5... d6) 6. Nge2 Nge7 7. O-O O-O 8. d3 d6 (8... a6 9. Be3 Nd4 10. Qd2 Rb8 11. Bh6 d6 12. Bxg7 Kxg7 13. Nxd4 cxd4 14. Ne2 Qb6 (14... e5 {main}) 15. f4 f5 16. Kh1 { Francis-Orton,Dyfed LKeague 2015,1-0}) 9. a3 (9. Be3 Nd4 10. Qd2 Nec6 11. Bh6 { main}) 9... Nd4 (9... b6) (9... Rb8 {alternatives}) 10. Nxd4 (10. Rb1 {main}) 10... cxd4 (10... Bxd4 {also played}) 11. Ne2 e5 12. f4 (12. b4 {Komodo12; 1 Wh win, 1 draw & 3 Bl wins}) 12... f5 13. Rb1 (13. c5 fxe4 (13... dxc5 14. fxe5 Bxe5 15. Bg5 Qd6 16. Nf4 Bd7 17. Rc1 Kg7 18. Qb3 Rab8 $15) 14. cxd6 Qxd6 15. Bxe4 Be6 $11 {Komodo12}) 13... Rb8 (13... fxe4 14. Bxe4 Bh3 $15 {Komodo12 & Stockfish10}) 14. a4 b6 (14... fxe4 15. Bxe4 Bg4 $15 {Komodo12}) 15. b4 Qc7 16. Bd2 Nc6 17. Kh1 Be6 $11 18. Ng1 h6 19. h4 fxe4 20. Bxe4 Ne7 21. Qe2 Nf5 22. Bxf5 $6 {weakening the wh squares- a fianchettoed b is a great protector of the K- its exchange often leaves horrible holes behind} (22. Kh2 $11) 22... Bxf5 $17 23. g4 Qb7+ (23... Bc8 $19) (23... Bd7 $19) 24. Kh2 Bd7 25. b5 Rbe8 $19 26. Qd1 e4 27. dxe4 Rxe4 (27... Qxe4 28. Qf3 Qxf3 29. Nxf3 Bxg4 $19 { Komodo12}) 28. Qf3 Bc8 29. Rbe1 Rfe8 (29... Rxe1 30. Rxe1 (30. Qxb7 Rxf1 31. Qg2 Ra1 $17) 30... Qxf3 31. Nxf3 Bxg4 $17 {Komodo12}) 30. Rxe4 Rxe4 31. Re1 Rxe1 (31... d5 32. cxd5 Rxe1 33. Bxe1 Qd7 34. Kg3 Bb7 $15 {Komodo12}) 32. Bxe1 (32. Qxb7 Bxb7 33. Bxe1 Bc8 34. Kg3 Be6 35. Nf3 Bxc4 $17 {Komodo12}) 32... Qxf3 (32... Qe7 33. Bf2 (33. Qa8 Qe6 34. g5 Qxc4 $19) 33... Bb7 34. Qd3 Be4 35. Qe2 d3 36. Qe3 Qb7 $19 37. Be1 Bh1 38. Qg3 Qe4 39. Bd2 Bd4 $19 {Komodo12}) 33. Nxf3 Be6 (33... Bxg4 34. Kg3 Be6 $19 {getting 2 pawns intead of just one} 35. Bb4 Bxc4 36. Bxd6 d3 37. Bb4 Bb3 38. a5 bxa5 39. Bxa5 Bc4 40. b6 axb6 41. Bxb6 Bd5 42. Ba5 Bb2 $17 {Komodo12}) 34. Bb4 Bxc4 35. Bxd6 d3 36. Bb4 Be6 (36... Bb3 37. a5 bxa5 38. Bxa5 Bc4 39. b6 axb6 40. Bxb6 Bd5 41. Kg3 Bc3 42. Be3 Kg7 43. Bd2 { Komodo12 & Wh survives}) 37. Kg3 h5 (37... Bb3) 38. gxh5 gxh5 39. Kf2 Kf7 ( 39... Bb3 $15) 40. Ng5+ Kf6 41. Bc3+ Kf5 (41... Kg6 $1 42. Bxg7 (42. Nxe6 Bxc3 43. Ke3 d2 44. Ke2 Kf5 $17) 42... d2 43. Ke2 Bb3 44. Kxd2 Kxg7 $11 {Komodo12}) 42. Bxg7 $16 Bb3 43. Ke3 Bxa4 (43... d2 44. Kxd2 Kxf4 45. Kc3 Bxa4 46. Kb4 Bd1 47. Nf7 Kg4 48. Bf6 Be2 49. Bg5 a6 50. bxa6 Bxa6 51. Ne5+ Kf5 52. Nc4 Kg4 53. Nxb6 {and Wh mates in 42- Lomonosov tablebases}) 44. Kxd3 (44. Nf3) 44... Bxb5+ {gets 2 runnersbut probably not enough to survive againt 2 Wh pieces} (44... Kxf4 {looks stronger- eliminating a passed pawn}) 45. Ke3 Kg4 46. Nf3 Ba4 47. Bf6 b5 (47... Bb3) 48. Ne5+ Kf5 49. Be7 a6 (49... a5 50. Bd8 b4 51. Bxa5 b3 52. Bc3 Be8 53. Bb2 Ba4 54. Bc1 Bb5 55. Kd4 b2 56. Bxb2 Kxf4 57. Bc1+ Kg3 58. Bg5 { & mate in 37.}) 50. Nc6 Ke6 51. Bb4 Kd5 52. Nb8 a5 53. Bxa5 b4 54. Bxb4 Ke6 55. Na6 Kf5 56. Nc5 Bc6 57. Be1 Bb5 $18 {Wh offered sa draw as very short of time.} 1/2-1/2 [Event "Dyfed League::CardiganB-Aberystwyth"] [Site "?"] [Date "2019.05.20"] [Round "?.1"] [White "Van Kemenade, R."] [Black "Brewer, Ben"] [Result "1-0"] [ECO "C42"] [WhiteElo "2021"] [BlackElo "1555"] [Annotator "kemen"] [PlyCount "145"] [EventDate "2019.05.21"] [SourceVersionDate "2019.05.20"] {[%evp 0,13,14,21,5,3,53,5,30,28,32,36,27,40,46,12]} 1. e4 e5 2. Nf3 Nf6 { playing the Petroff against someone who plays the Petroff himself,} 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 {but this variation was not part of Bl's opening preparation } (5. d4 d5 6. Bd3 Be7 7. O-O Nc6 8. c3 O-O 9. Nbd2 Nf6 10. b4 {Van Kemenade-Finn,4NCl 2019,1-0}) 5... Nxc3 (5... Nf6 6. d4 Be7 7. Bd3 O-O 8. O-O c5 9. h3 d5 10. dxc5 Bxc5 11. Bg5 Be6 12. a3 Nbd7 {Francis-Van Kemenade, Dyfed Closed 2010,0-1}) 6. dxc3 Be7 7. Bf4 (7. Be3 {is the alternative, when another local game went} Bf5 8. Nd4 Bg6 9. f4 c5 10. Nf3 Nc6 11. Bd3 Bxd3 12. Qxd3 O-O 13. O-O-O Qa5 14. Kb1 b5 15. h4 b4 16. Ng5 $18 {Francis(1684) -Talbot,(2041) Dyfed League, Aberystwyth BvsA 2010,1-0}) 7... Bf5 (7... O-O 8. Qd2 Nd7 9. O-O-O Nc5 10. Be3 Re8 {main}) (7... Be6 8. Qd2 Nc6 9. O-O-O Qd7 (9... Bxa2 10. b3 a5 11. Kb2 a4 {is a wild theoretical line}) 10. Kb1 a6 (10... O-O-O)) 8. Qd2 a5 $146 (8... Nd7 9. O-O-O Nc5 10. Nd4 Bg6 11. f3 O-O 12. g4 Ne6 13. Be3 Nxd4 14. Qxd4 c6 15. f4 f5 16. h3 Qa5 17. a3 d5 18. Rg1 {Nimmy-Gonzalez Amaya, Gibraltar Masters 2006,1-0}) (8... O-O 9. Nd4 (9. O-O-O) 9... Bg6 10. O-O-O ( 10. g4 {0.5-1.5}) 10... Nc6 {7-0}) 9. O-O-O {Komodo12} (9. Qd5 Bd7 (9... Bc8) ( 9... Bg4) 10. Qxb7 Nc6 11. Nd4 Rb8 12. Nxc6 Rxb7 13. Nxd8 Rxb2 14. O-O-O Rb6 15. Rd5 (15. Nxf7 Kxf7 16. Be3 Rbb8 17. Bc4+ Be6 18. Bxe6+ Kxe6 19. Rhe1 Kd7 20. Rd5 $16) 15... O-O 16. Rxa5 Bxd8 (16... Rxd8 $16 {Stockfish10})) (9. Bd3 Bxd3 10. Qxd3 O-O 11. O-O-O Nd7 $11 {Komodo12}) 9... O-O 10. Nd4 (10. h4 { considered, Komodo12 & Stockfish10 give slight advantage to Wh} Nc6 11. Bc4 Bf6 12. Bg5 Be6) 10... Bg6 (10... Bd7 11. h4 Re8 12. Be2 Nc6 13. Nb5 Bf8 14. c4 $14 {Stockfish10}) 11. Nb5 {restraining the Q side, there aare similar idea in some lines of the King's Indian} (11. h4 {considered,a standard sacrifice to open the h file; but Wh couldn't see anything clear. Stockfish10 likes it & suggests Bl does not take . Komodo12 quite happily accepts the bait} Bxh4 ( 11... h5 12. g4 Nc6 (12... a4 13. Be2 Ra5 14. Kb1 $16 {Stockfish10}) 13. gxh5 Bxh5 14. Nf5 Bxd1 15. Rg1 Bf6 16. Qxd1 g6 17. h5 $18 {Stockfish10}) (11... h6 { another Komodo12 idea, Stockfish10 just takes} 12. Bxh6 gxh6 13. Qxh6 $18 Bf6 14. Bc4 d5 15. Ne6 Qe7 16. Bxd5 fxe6 17. Qxg6+ Qg7 18. Bxe6+ Kh8 19. Qh5+ Qh7 20. Qg4 Nc6 21. f4 $18 {and Stockfish10 considers the 3 connected passed pawns better than the piece & gives it as winning; Komodo12 assesses this position as definite plus for Wh}) 12. g4 (12. Bd3 $1 {Stockfish10} Nc6 (12... Bxd3 13. Qxd3 h6 14. Bxh6 gxh6 15. f4 Bg5 16. Rdf1 Re8 17. Rh5 Nc6 18. Nf5 Ne7 19. Rxg5+ hxg5 20. Nh6+ Kg7 21. fxg5 Rf8 22. Qd4+ {mate in 9}) 13. Bxg6 hxg6 14. Nf3 Be7 15. Rh3 d5 16. Rdh1 f6 17. Qd3 Kf7 18. Nh4 f5 19. Nxf5 gxf5 20. Qxf5+ Ke8 21. Rh8 Qd7 22. Qg6+ Kd8 23. Qxg7 Qf5 24. Rxf8+ Bxf8 25. Bg5+ Ne7 26. Bxe7+ Bxe7 27. Rh8+ Kd7 28. Rxa8 Qxf2 29. b3 $18 {Stockfish10}) 12... Bf6 13. Bg2 Bxd4 14. Qxd4 (14. cxd4) 14... Nc6 15. Qd5 a4 $11 {Komodo12}) 11... Nd7 12. Be2 (12. h4 {considered} Be4 (12... Bxh4 13. Nxc7 $18) 13. f3 Bc6 14. Nd4 Bf6 15. Kb1 a4 16. a3 Re8 17. Bd3 Nc5 18. Bc4 Ne6 19. Bxe6 fxe6 20. Bg5 e5 21. Nxc6 bxc6 22. Qd3 d5 23. Bxf6 Qxf6 24. h5 h6 $14 {Stockfish10}) 12... Nc5 13. f3 a4 $11 14. a3 {Stockfish10} (14. h4 {Stockfish10} Ne6 15. Be3 {considered} h6 16. a3 Bxh4 17. f4 Nc5 18. Nxc7 Ne4 19. Qd5 Qxc7 20. Rxh4 Ng3 21. Qf3 Nxe2+ 22. Qxe2 Rae8 23. Rd4 Qc6 24. g4 f5 25. g5 h5 $15 {Stockfish10}) (14. Be3 a3 15. b3 (15. Nxa3 Rxa3 16. bxa3 Qa8 $19 {Stockfish10}) 15... Bf6 16. h4 h5 17. Bc4 Na6 18. Qf2 $11 {Stockfish10}) 14... Qd7 (14... Re8 $11 {Stockfish10}) 15. Be3 (15. h4 h6 ( 15... h5 16. g4 Ne6 17. Be3 Rfe8 18. Kb1 $16) 16. g4 Rfe8 17. c4 Rad8 18. Nc3 Qc8 19. Be3 $14 {Stockfish10}) 15... Qf5 16. Bc4 (16. Nd4 Nb3+ 17. Nxb3 axb3 18. Bd3 Qe6 19. Bxg6 hxg6 20. Rhe1 bxc2 21. Qxc2 $11 {Stockfish10}) 16... Nb3+ {missing the following Wh sequence, but it leads to a quite difficulr game in which Wh must take great care to exploit the extra doubled pawn ( Though Wh does have a potential passed a pawn)} (16... d5 17. Nd4 Qd7 18. Bf1 Ne6 19. h4 $14 {Stockfish10}) 17. Bxb3 axb3 {still eyeing the mate on b1, however} (17... Qxb5 $1 18. Ba2 Bf6 19. h4 Rfe8 20. g4 $14 {though it should hold for Bl}) 18. Nd4 Qd5 19. Nxb3 $14 Qxd2+ {probably Bl should keep Qs on, as all the ensueing swaps help Wh nearer to being able to use the extra pawn} 20. Rxd2 (20. Kxd2 { considered , may well be more exact}) 20... Rfe8 21. Bf4 Ra4 22. Rd4 Rxd4 ( 22... Raa8) 23. cxd4 {straightens the pawns} (23. Nxd4 {gives the N more activity}) 23... Bf6 24. Kd2 Kf8 25. c3 (25. h4 Bd8 26. c4 $16 {Stockfish10}) 25... h5 26. Re1 Rxe1 27. Kxe1 b6 28. Kd2 Bf5 29. d5 {during the game, Wh felt that this attempt to exchange bl square Bs was overambitious and put a strain on defending exposed Q side pawns. However, it is the first choice of both Stockfish10 & Komodo12.} (29. c4 {is more cautious} Be6 30. Kc3 Ke7 31. Be3 { while slowly preparing the advance of the b pawn & a pawn}) 29... g5 (29... Bc8 {looks strong but Wh can just manage} 30. Kd3 (30. Kc1 Ba6 31. Nd2 b5 32. Ne4 Bb7 33. Nxf6 gxf6 34. b3 Bxd5 35. Kc2 {its opposite colour Bs, but Wh may just be able to force 2 passed pawns, the recipe for a win} Bc6 36. g4 Bxf3 37. gxh5 Bxh5 38. a4 bxa4 39. bxa4 {but its going to be a long haul}) 30... Ba6+ (30... Bb7 31. Ke4) 31. Ke4 {and the B goes to d4}) 30. Be3 g4 31. Nc1 (31. Bd4 Bg5+ 32. Be3 Bf6) 31... gxf3 32. gxf3 Be5 33. f4 (33. h4 Bd7 34. b3 b5 35. Ne2 Ke8 36. Bd4 Bh2 {makes life more difficult for Wh}) 33... Bf6 34. Ne2 Be4 35. Ng3 ( 35. Bd4 {Stockfish10} Bh4 (35... Bxd4 36. Nxd4 Bxd5 37. Nb5 $18) 36. c4 $16) 35... Bf3 (35... Bxd5 {may be Bl's best, though it cedes an immediate passed paw, Bl can hope to hold up the a pawn} 36. Nxh5 Ke7 37. Bd4 Bh4 38. Ke2 c5 39. Bf2 Bf6 40. Ke3 $16 (40. Nxf6 Kxf6 41. Bh4+ Ke6 42. Bd8 b5 43. Ke3 Bb3 { is possibly not winning though Wh can create a passed a pawn} 44. h4 Bd1 (44... Kf5 45. Be7 Ke6 46. Bf8 Bd1 47. Kd2 Bg4 48. b3 Kd5 49. a4 bxa4 50. bxa4 Kc6 51. Kd3 d5 52. Ke3 Kb6 53. Be7 Kc6 54. f5 Bxf5 55. h5 Bc2 56. h6 Bh7 57. Kf4 d4 58. c4 d3 (58... Bd3 59. Ke5 Bh7 60. Bh4 $18) 59. Ke3 Kb6 60. Bd8+ Ka6 61. a5 Bf5 62. Bb6 Bh7 {seems to hold for Bl}))) 36. Kd3 (36. Bd4 h4 (36... Bxd4 37. cxd4 h4 38. Nf5 Bxd5 (38... h3 39. Ne3 f6 40. Ke1 Kg7 41. Kf2 Bh5 42. Kg3 $18) 39. Nxh4 $18) 37. Nf5 Be7 38. c4 $16 {Stockfish10}) 36... h4 37. Ne4 Bg7 (37... Bd8 38. c4 $16) 38. Bd4 $18 {the idea behind the d5 move} Bxd4 {makes Wh's task easier as the remaing B is left with no targets, while the N has plenty. However the alternatives don't offer much either} (38... f5 39. Ng5 Bxd5 40. c4 Bg8 41. Bxg7+ Kxg7 42. b4 c5 43. Nf3 $18) (38... Bh6 39. Ke3 Bg2 40. Bf6 Ke8 41. Bxh4 $18 {Stockfish10}) 39. Kxd4 $18 Ke7 (39... b5 40. c4 bxc4 41. a4 Bg4 42. a5 Bc8 43. Kxc4 $18) 40. c4 f5 41. Nc3 Kd7 42. b4 c6 43. dxc6+ (43. a4 { probably transposes}) 43... Kxc6 44. a4 Bg2 {the B has freedom of movement, but no prospects} 45. Nd5 (45. a5 {alternative}) 45... Be4 46. b5+ Kb7 {(draw?) } 47. Kc3 {Stockfish10} (47. Nf6 Bc2 48. Ne8 Bxa4 49. Nxd6+ Ka7 50. Nxf5 $18) 47... h3 48. Nf6 (48. Kb4 Bf3 49. a5 {creates a passed b pawn, original idea}) 48... Bf3 49. Ne8 d5 50. Nd6+ Kc7 51. Nxf5 dxc4 52. Kxc4 Bd1 53. Kb4 (53. Ne3 Bxa4 (53... Bh5 54. Kd4 Bf7 55. Nd5+ Kb7 56. Ke5 Bg6 57. f5 Bh5 58. f6 Bf7 59. Kd6 Ka7 60. Kc6 $18 (60. Nf4 $18)) 54. Kb4 {wins the B - Stockfish10}) 53... Bf3 54. Nd4 (54. Ne3 Bg2 55. Kc4 Kd6 56. Kd4 Bf3 57. f5 Bb7 58. Nc4+ $18 { Stockfish10- there are several different ways to break through}) 54... Bg2 55. a5 (55. f5) 55... bxa5+ 56. Kxa5 Kd6 57. b6 (57. Ka6 {original idea, prevents the B getting to b7} Kd5 58. f5 (58. Ne2)) 57... Bb7 58. Kb5 Kd5 59. f5 (59. Nf5 Ke6 60. Ne3 Kd6 61. Nc4+ Ke6 62. Kc5 $18 {Stockfish10}) 59... Kxd4 (59... Ke5 60. Kb4 {Zugzwang} Bh1 61. Ka5 Bb7 62. Kb5 Kf6 63. Kc5 Ke5 64. Nb5 Kf6 65. Nd6 Bh1 66. Kd4 Bc6 67. Ke3 Kg5 68. b7 Bxb7 69. Nxb7 Kxf5 70. Kf3 $18) 60. f6 { nor can the B dance at two weddings} Bd5 61. f7 (61. b7) 61... Bxf7 62. b7 Bc4+ 63. Kb4 Bd5 64. b8=Q Bg2 65. Qd6+ (65. Qf4+) 65... Ke3 66. Qg3+ {stopping the K hiding behind the h2 pawn, but the very presence of the B dooms Bl's attempts } (66. Kc3 Kf2 67. Kd2 Kg1 68. Qg3 Kh1 69. Ke2 Ba8 70. Kf1 Bg2+ 71. Kf2 Bf1 72. Qg1#) 66... Kd4 (66... Ke2 67. Kc3 (67. Qf4 Bf3 68. Kc3 Bb7 69. Kd4 Bc6 70. Qe5+ Kf3 71. Qe3+ Kg2 72. Qg3+ Kh1 73. Ke3 {as above}) 67... Kf1 68. Kd3 { as above}) 67. Qe1 Kd3 68. Kc5 Kc2 69. Kd4 Kb3 70. Qc1 (70. Qb1+) 70... Kb4 71. Qb2+ Ka5 72. Kc5 Ka6 (72... Bc6 73. Qb4+ Ka6 74. Qb6#) 73. Qb6# 1-0 [Event "Dyfed League:CardiganB-Aberystwyth"] [Site "?"] [Date "2019.05.20"] [Round "?.3"] [White "Francis, Matthew"] [Black "Brewer, Joshua"] [Result "1/2-1/2"] [ECO "C46"] [WhiteElo "1712"] [BlackElo "1400"] [Annotator "kemen"] [PlyCount "111"] [EventDate "2019.05.21"] [SourceVersionDate "2019.05.20"] {[%evp 0,14,63,6,24,13,24,17,44,44,132,110,115,118,164,115,150]} 1. e4 e5 2. Nf3 Nc6 3. Nc3 Bc5 4. Nxe5 Bxf2+ {gives Wh a terrific centre, with little real inconvenience to the K.} (4... Qf6 5. Nf3 {Francis-Gray, Dyfed League 2013,1-0} ) (4... Nxe5 {Bl should recapture} 5. d4 Bd6 6. dxe5 Bxe5 7. Bc4 {though Wh gains much the better game}) 5. Kxf2 Nxe5 6. d4 {69% for Wh} Qf6+ {the Wh K gets to safety, while now the Bl Q is at risk on this square} (6... Ng6 7. Bc4 d6 $16 {75% for Wh}) 7. Kg1 $18 Nc6 8. Be3 {good enough, though sharpest is} ( 8. Nd5 Qd8 (8... Qxd4+ 9. Qxd4 Nxd4 10. Nxc7+ Kd8 11. Nxa8 $18) 9. Qg4 {5-0} g6 (9... Kf8 10. Qg3 d6 11. Bg5 f6 12. Qf2 Be6 13. Bd2 Bf7 14. Bd3 $18 { Stockfish10}) 10. Bg5 f6 11. Qf4 $18 (11. Nxf6+ Nxf6 12. Qh4 O-O 13. Bc4+ d5 14. Bxd5+ Kg7 15. Bh6+ Kh8 16. Bxf8 Qxf8 17. Bxc6 bxc6 18. Rf1 $18 {Stockfish10 })) 8... Nge7 (8... d6 {Cloud Engines 2-1} 9. Bc4 $18 {Stockfish10}) 9. Qd2 (9. Bb5 a6 10. Bxc6 bxc6 11. Qf1 Qg6 $11 {Lazareva-Butschek, Gelsenkirchen ch U16, 2003,0-1}) (9. Nb5 Kd8 10. Qd2 h6 11. c4 (11. Bf4 d6 12. e5 $18) 11... a6 12. Nc3 Ng6 13. Be2 Re8 14. Rf1 Qe7 15. Bd3 d6 16. h3 Na7 17. Nd5 Qe6 18. h4 c6 19. Qa5+ Kd7 20. Qc7# {Drame-Seruga, SLO ch women, Ptuj 2005,1-0}) (9. d5 $1 $18 { Cloud Engines} Nb4 10. h4 h6 11. Bd4 Qg6 12. Qd2 d6 13. h5 Qh7 14. a3 Na6 15. Bd3 O-O 16. Rf1 {Stockfish10}) 9... d6 10. Be2 (10. h4 h5 11. Nb5 O-O (11... Kd8 12. e5 Qg6 13. exd6 cxd6 14. Bf4 d5 15. Re1 a6 16. Nd6 $18) 12. Nxc7 $18 { Stockfish10}) (10. Re1 O-O 11. Nb5 Bd7 12. Nxc7 $18) 10... Bd7 11. Nb5 (11. Rf1 {Stockfish10} Qg6 12. h4 h5 13. Nd5 O-O-O 14. Bd3 f5 15. Nf4 Qf6 16. d5 Nb8 17. exf5 Nxf5 18. Bxa7 $18 (18. Ne6 $18) (18. Rh3 $18)) (11. Re1 Qg6 12. h4 h5 13. Kh2 O-O-O 14. b4 Kb8 15. b5 Na5 16. Bd3 $18 {Stockfish10}) 11... Kd8 (11... Rc8 $16) 12. h4 $18 (12. Rf1 $18) (12. c4 $18) 12... h6 (12... h5) 13. Rf1 (13. c4) (13. h5) 13... Qg6 14. Bd3 f5 15. h5 Qh7 16. Nc3 {retreating a wellplaced N} ( 16. exf5 $1 Qg8 (16... Bxf5 17. Rxf5 Nxf5 18. g4 $18) (16... Nxf5 17. Qc3 $1 ( 17. g4 Nxe3 18. Bxh7 Nxf1 19. Qf2 Ne3 20. Qf7 Ne7 21. Qxg7 Re8 22. Qxh6 $18) 17... d5 18. Qb3 Nce7 19. Bf4 Bxb5 20. Qxb5 Qg8 21. Qxb7 Rc8 22. Rh3 $18 { Stockfish10})) (16. Rh4 a6 17. Nc3 Rf8 18. exf5 $18 {Stockfish10- retaking on f5 is lethal for Bl. In all these variations the problem for Bl is that his K is vulnerable in the centre & that his QR remains out of play}) 16... Nb4 17. e5 (17. Bc4 fxe4 18. a3 Nbc6 19. Rh4 Nf5 20. Rhf4 $18 {Stockfish10}) 17... Nxd3 18. exd6 cxd6 19. Qxd3 g5 (19... f4 20. Qxh7 Rxh7 21. Bxf4 $18 {Stockfish10}) 20. d5 $6 {Suddely the pawn advance gives Bl serious attacking chances against the Wh K. Wh had to break up the pawns with} (20. hxg6 Qxg6 21. Bf4 {when the Bl forces are still uncordinated} (21. Qd2 Kc7 22. Ne2 b6 23. d5 Kb7 24. Nf4 $18) 21... Rc8 22. Qd2 Ke8 (22... Kc7 23. Re1 Rce8 24. Rxe7 Rxe7 25. Nd5+ Kd8 26. Rh3 (26. Nxe7 Kxe7 27. Rh3) 26... Rg8 27. Nxe7 Kxe7 28. Rg3 Qf7 29. Qe1+ Kd8 30. Qa5+ b6 31. Qxa7 {The Bl pawns are a mess}) 23. Bg5 Kf7 24. Bxe7 Kxe7 25. Nd5+ Kf7 26. Qb4 b6 27. Rh3 Rxc2 (27... Rhg8 28. Nf4 Qf6 29. Ra3 a5 30. Qxb6 $18) 28. Nf4 $18 {the Bl K remains in the field of fire-Stockfish10}) 20... f4 $15 21. Bd4 Qxd3 22. cxd3 Rh7 $11 {Bl is still in defence mode} (22... Re8 $15) 23. g3 {the pawns must be challenged or Wh will never get his KR out, & his K would remain menaced} Nf5 24. Bf6+ Kc7 25. Rc1 (25. gxf4 Ng3 26. Rc1 Nxh1 27. Ne4+ Kb6 28. Kxh1 a5 (28... Rc8) 29. Nxd6 gxf4 30. Ne4 Bg4 $11 { Stockfish10}) 25... Kb6 (25... fxg3 $19 {Stockfish10}) 26. Ne4 (26. gxf4 gxf4 ( 26... g4) 27. Kf2 Rf8 28. Ne4 Bb5 29. Rh3 Rhf7 30. Bc3 Rg8 $11 {Stockfish10}) 26... fxg3 $19 27. Kg2 Rf7 (27... Rf8 {looks even stronger}) 28. Bc3 (28. Rhf1 Ka6 $19 (28... Ne3+ 29. Kxg3 Nxf1+ 30. Rxf1 Raf8 $19)) 28... Nh4+ (28... Raf8 29. Rhg1 Bb5 30. Kh1 Bxd3 31. Nxg3 Nxg3+ 32. Rxg3 Be4+ 33. Kg1 Bxd5 $19 (33... Bf3 $19 {Stockfish10})) 29. Rxh4 {both sides were running very low on time now- Wh plays his best practical chance, with an eye on a counterattack} (29. Kxg3 Rf3+ 30. Kh2 Raf8 (30... Rh3+ 31. Kg1 Rxd3 $19) 31. Rhd1 Rh3+ 32. Kg1 Rf4 33. Be1 Bg4 34. Bxh4 Rxh4 35. Rf1 Bf3 36. Rxf3 (36. Nf2 g4 $19) 36... Rxf3 37. Rc3 Rxh5 $19) (29. Kg1 Rf3 30. Be1 g2 31. Rxh4 gxh4 32. Bxh4 Rxd3 33. Rc3 Rxd5 $19) 29... gxh4 30. Bd4+ Ka6 31. Nxd6 Rff8 {Bl is still too defensive} (31... h3+ {Rudy} 32. Kxg3 (32. Kg1 Rf3 33. Ne4 (33. Rc3 $2 h2+ 34. Kg2 Bh3+ $132) 33... b6 $19) 32... Rg8+ 33. Kh2 Rg2+ 34. Kh1 Rf3 35. Ne4 b6 36. Rd1 Bg4 37. d6 Rf4 38. Rg1 Rc2 $19 {Stockfish10and Wh will not survive for very long}) (31... Rf4 {Stockfish10} 32. Ne4 b6 33. Be3 Rf5 34. Bxh6 Rxh5 35. Bg5 Rg8 $19 { & the combined pawns will win quickly}) 32. Rc3 {it looks as if Wh can now force mate, but the Engine wriggles out to equality, as Bl does as well} Rf2+ ( 32... h3+ 33. Kxg3 (33. Kg1 Ba4 34. Ra3 b5 35. b3 h2+ 36. Kg2 Rf1 $19) 33... Rg8+ 34. Kh2 Rg2+ 35. Kh1 Ba4 36. Ra3 b5 37. Ne4 Rc2 38. Nc5+ Ka5 39. Nb7+ Ka6 (39... Kb4 40. Rc3 Bb3 41. Bc5+ Ka4 42. axb3#) 40. Nc5+ $11 {Stockfish10}) ( 32... Ba4 {Stockfish10} 33. Ra3 (33. Rc4 Bb5 34. Rc3 Ba4 {repetition}) 33... b5 34. Ne4 Ka5 35. Nc5 Rab8 {risky if Wh plays on} (35... Rfc8 {draws} 36. Nb7+ Ka6 37. Nc5+ Ka5) 36. d6 $1 (36. Nb3+ Ka6 (36... Kb4 37. Bc3# (37. Bc5#)) 37. Nc5+ $11) 36... Rf5 37. d7 Rxh5 38. b4+ Kxb4 39. Rxa4+ bxa4 40. Na6+ Ka3 41. Nxb8 Rd5 42. Bf6 Rxd3 43. d8=Q Rxd8 44. Bxd8 Kxa2 {given as winning by Stockfish10 ! However few humans would be able to envisage that the 2 pieces would be able to stop all the pawns, let alone play the B & N ending perfectly , all the while living on increments.} 45. Nc6 a3 46. Bf6 Kb1 47. Na5 a2 48. Nb3 h5 49. Na1 {Zugzwang, sooner or later the Bl K has to move to c1 allowing Bxh4, thus releasing the Wh K for duty}) 33. Bxf2 (33. Kg1 {tries for a win, but again it seems that Bl survives with} Ba4 (33... Ka5 34. Nc4+ Ka4 35. Ra3+ Kb4 36. Rb3+ Ka4 37. Bc5 h3 (37... a5 38. Nb6#) 38. Rb4#) 34. Bxf2 gxf2+ 35. Kxf2 Rf8+ 36. Kg1 Rd8 37. Ne4 Bd1 38. Kh2 Bxh5 $11 (38... Rxd5 39. Ra3+ Ra5 40. Rxa5+ Kxa5 41. Nf6 Kb5 $11 {Stockfish10})) 33... gxf2 34. Kxf2 Rf8+ (34... Rg8) 35. Kg1 Kb6 36. Rb3+ (36. d4) 36... Kc5 (36... Kc7 37. Nxb7 Rf5 $11 { Stockfish10}) 37. Nxb7+ (37. Ne4+ Kxd5 38. Rxb7 {Rudy & Stockfish10- both N & R are more actively placed} Bf5 39. Rxa7 Kd4 40. Nf2 Ke3 41. Rg7 Rc8 42. Rg2 Rc1+ 43. Kh2 Be6 44. Ng4+ Kxd3 45. a4 Bb3 46. Kh3 Bxa4 47. Nxh6 $11 { Stockfish10}) 37... Kxd5 $15 38. d4 (38. Rc3) 38... Rg8+ 39. Kh2 h3 $19 40. Rg3 (40. Nc5 Rg2+ 41. Kh1 Bg4 42. Nd3 Ke4 43. d5 a5 44. Ra3 Rd2 45. Nc5+ Kxd5 46. Rd3+ Rxd3 47. Nxd3 Kd4 48. Nf4 Ke4 49. Ng6 a4 50. Kh2 Bxh5 51. Ne7 Bg4 52. Nc6 Bf5 $19 {Stockfish10}) 40... Rxg3 (40... Rb8 $1 {Bl's R is better as it has targets, so should be kept on} 41. Nc5 Rxb2+ 42. Kg1 Bc8 43. Nd3 Rb1+ 44. Kh2 Rf1 (44... Kxd4 45. Nf2 Rb2 46. Rd3+ Kc4 47. Rf3 Rxa2 $19) 45. Nb4+ Kc4 46. Nc6 Rf2+ 47. Kg1 Rxa2 $19 {Stockfish10}) 41. Kxg3 Kxd4 $19 42. Nd6 h2 {again Bl plays safe in time shortage. That h5 pawn could be dangerous if h6 drops. So gets rid of Wh's most dangerous pawn. Except that it gets rid of the far more dangerous Bl h3 pawn, & also finishes off his Q chances as well. In positions like this with pawns on both sides of the board, the B is far superior to the short-hopper N; it can both protect its own pawns while also stopping any opposition pawns getting through.} (42... Kd3 $1 {Stockfish10-just goes to eliminate Wh's Q side- at worst the B gives itself up for Wh's last pawn, & then the N is too far away to stop Bls a pawn (Ns have trouble with RPs anyway, as they can only approach from one side, & can easily be driven away by a K} 43. Nf7 Kc2 44. b4 Kc3 45. Nxh6 (45. Ne5 $1 {Wh needs to find this move to draw the game} Be8 $1 (45... h2 46. Kxh2 Be8 47. Kh3 Bxh5 48. b5 Be2 49. a4 Kb4 50. Nc6+ Kxa4 51. Nxa7 Bxb5 52. Nxb5 Kxb5 53. Kh4 $11 (53. Kh2 $11)) 46. Kxh3 Kxb4 47. Kh4 Ka3 48. Ng4 Kxa2 49. Nxh6 a5 50. Nf5 a4 51. Nd6 Kb3 (51... a3 52. Nc4 $11) 52. Nxe8 a3 53. h6 a2 54. h7 a1=Q 55. Kh5 $11 {and by a miracle the presence of the N saves the draw (confirmed by endgame tablebases)}) 45... Be6 $1 {the N has no squares to jump to in order to release the h pawn as} (45... Kxb4 {though just allows Wh to save the game.} 46. Nf7 Bf5 47. Ng5 Ka3 48. Nxh3 Kxa2 49. Kf4 Bh7 50. Ng5 Bg8 51. Ke4 Kb2 52. Kd3 a5 53. Kd2 {getting the K to help is a bonus} a4 54. Ne4 a3 55. Nc3 Bf7 56. h6 Bg8 57. Nd1+ Kb3 58. Nc3 Bh7 59. Ne2 Kc4 60. Nc1 Kd4 61. Na2 {and Bl is held off. Admittedly this is tricky to see, especially in time shortage. But it stresses that one should not be spending all one's time in middlegame or opening, even with increments coming.} ) 46. Ng4 Bxg4 47. Kxg4 h2 48. h6 h1=Q {and Wh never gets there}) 43. Kxh2 Bg4 44. Nb5+ Kd3 45. Nxa7 Bxh5 46. b4 Kc4 47. a3 Kb3 48. b5 (48. Nb5) 48... Bf3 49. Kg3 Bb7 50. Kh4 Bf3 (50... Ka4) 51. Nc6 Ka4 (51... Kxa3 {also}) 52. Nd4 Bb7 53. Kh5 Kxa3 54. Kxh6 Kb4 55. Kg5 Kc5 56. Ne6+ {(draw?)} 1/2-1/2 [Event "Dyfed League:CardiganB-Aberystwyth"] [Site "?"] [Date "2019.05.20"] [Round "?.4"] [White "Osinga, Awne"] [Black "Cook, James"] [Result "1/2-1/2"] [ECO "B13"] [WhiteElo "1350"] [BlackElo "1496"] [Annotator "kemen"] [PlyCount "45"] [EventDate "2019.05.21"] [SourceVersionDate "2019.05.20"] 1. e4 c6 2. Nf3 d5 3. exd5 (3. Nc3) 3... cxd5 4. d4 Nf6 5. h3 Nc6 6. c3 Bf5 7. Nbd2 (7. Bd3 {main; a little later the Bs swap off anyway}) 7... h6 8. Bb5 (8. Be2 e6 9. O-O Bd6 10. Re1 O-O 11. Nf1 Qc7 12. Ne3 Bh7 13. Bd2 a5 14. a4 Qb6 15. b3 Rac8 {Papler-Monticone, Portoroz op 2016,0-1}) 8... a6 (8... Qb6 9. Qb3 e6 10. Ne5 Rc8 11. Ndf3 Be7 12. Ba4 Qa6 13. Bb5 Qb6 14. Be3 O-O 15. Bd3 Qxb3 16. axb3 Bxd3 17. Nxd3 Ne4 {Meyer-Orlinski, Hessenliga 1995,0-1}) 9. Ba4 (9. Bxc6+ bxc6 10. Ne5 Nd7 11. Qa4 Nxe5 12. dxe5 Qc7 13. O-O $11 {Komodo13}) 9... b5 10. Bc2 Bxc2 11. Qxc2 e6 $11 12. Nb3 Qc7 13. Qe2 Bd6 14. Nc5 O-O (14... Bxc5 15. dxc5 O-O 16. O-O e5 $15 {Komodo13}) 15. O-O Rfe8 16. Nd3 Ne4 17. Be3 Rac8 ( 17... Na5) 18. Nc5 Nxc5 (18... Bxc5 19. dxc5 Na5 20. b4 Nc4 21. Qc2 f5 $15 { Komodo12}) 19. dxc5 Bf4 (19... Be7) 20. b4 Rcd8 21. Rfd1 Bxe3 22. Qxe3 e5 23. a3 $11 {(draw?)} 1/2-1/2

Friday, 12 April 2019

Down by the Seaside

With the Students' Union closed for the Easter holiday, the return match between the Town and University teams, following the latter's unexpected victory earlier in the season, took place at the Marine Hotel on the Promenade. On top board, Rudy van Kemenade showed that strong players can get away with oversights that the rest of us get punished for, when his miscalculated Nxf7 sac against Marcus Perry in a Ruy Lopez was met almost immediately by Black dropping a rook, leaving him the exchange up with a simple win. On Board 2 Adam Watkin-Jones managed to trap Dan Hardman's queen in a Sicilian, and White was only able to escape by giving up too much material. The bottom board was also a Sicilian, where Sam Holman's strategic dominance in the centre led to material advantage and an eventual win against Kit Barker. The longest game, on Board 3, was a repeat of last week's friendly between Kieran Judge and myself. Once again, the result was a draw after the lower-rated player had the best of the struggle; at one point under the pressure of time and tactics, I made an illegal move, which led to a welcome intermission as the remaining players retired to the other room to try to add the statutory two minutes to Kieran's clock. Digital clock technology being what it is, the process took about ten minutes, which was a useful breather for both of us. The match finished 3½-½ to Aberystwyth Town.

The club is now adjourned for the holiday, and our next club night will be Tuesday 30 April.

[Event "DyfedLeague:AberystwythU-Aberystwyth"] [Site "?"] [Date "2019.04.09"] [Round "?"] [White "Van Kemenade, R."] [Black "Perry, Marcus"] [Result "1-0"] [ECO "C78"] [WhiteElo "2021"] [BlackElo "1437"] [Annotator "kemen"] [PlyCount "87"] [EventDate "2019.??.??"] {[%evp 0,15,19,31,34,19,13,4,13,-2,2,8,8,8,59,54,79,77]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Bc5 {Moeller Defence, liked by Alekhine} 5. O-O Nf6 (5... d6) ( 5... b5) 6. d3 (6. c3 {main}) 6... h6 (6... b5) (6... d6 {save the pawn that Wh threatened by guarding e4}) 7. Bxc6 bxc6 (7... dxc6 {most frequent}) 8. Nxe5 O-O 9. Nc3 (9. Be3 {also played}) 9... Re8 10. d4 {Komodo12} (10. Nf3 d5 (10... d6 11. h3 {4-0}) 11. e5 Nd7 12. d4 Bb4 13. Qd3 {Vidal Gonzalez-Moreton, Orense 1997,1-0}) 10... Bb4 11. Qf3 (11. f3 {may be best- Komodo12, considered}) 11... Bxc3 (11... c5 {concerned Wh after his move, but Komodo12 gives 2 replies} 12. Nd5 (12. Nxf7 Kxf7 13. e5 $18 {is the other one}) 12... cxd4 (12... Nxd5 13. Qxf7+) 13. Bxh6 $16 (13. Nxf7 Kxf7 14. e5 Rxe5 15. Nxf6 Qxf6 16. Qxa8 $18 Qc6 17. Qxc6 (17. Qxc8 Re8 $15) 17... dxc6 18. Bf4 Re2 19. c3 dxc3 20. bxc3 Bxc3 21. Rac1 Ba5 22. Rxc6 $16 {Komodo12})) 12. bxc3 (12. Qxc3 Nxe4 13. Qf3 Nf6 14. Qg3 (14. Bxh6 gxh6 15. Qg3+ Kh7 16. Qd3+ Kg7 17. Qg3+ Kh7 {repetition?} 18. Nxf7 Qe7 19. Ne5 Qg7 $15) 14... d6 15. Nxc6 Qd7 16. d5 Qg4 $11 {Komodo12}) 12... d5 13. exd5 (13. Nxc6 {looked at for a while} dxe4 14. Qg3 {Komodo12} Qd6 (14... Nh5 {considered & pm analysis} 15. Nxd8 Nxg3 16. hxg3 Rxd8 17. Bf4 c6 18. Rfe1 Bf5 19. Rab1 $14 {its not easy with the opposite colour Bs & Wh is only half a pawn up.}) 15. Ne5 Rb8 $14 {Komodo12} 16. Bxh6 Nh5 17. Qh4 Qxh6 $19 ) 13... cxd5 (13... Qxd5 $14 {Komodo112}) 14. Bf4 (14. Re1 $16) 14... Ne4 ( 14... Bf5 15. Bxh6 Be4 16. Qg3 Nh5 17. Qg4 $18 {Komodo12}) 15. Nxf7 $2 { based on a mislooking, seen just after playing it} (15. c4 {first idea} f6 { Komodo12} (15... Bb7 16. Rab1 (16. c5 $16 {pm anaysis}) 16... Ra7 (16... Rb8 17. Nxf7 $18 Kxf7 18. Bxc7+ Qf6 19. Qxf6+ Nxf6 20. Bxb8 Rxb8 21. Rb2 $18 { Komodo12}) 17. c5 $16 {Komodo12}) 16. Nc6 Qd7 17. Na5 dxc4 18. Rfe1 Qd5 19. Nxc4 Qxc4 20. Rxe4 Bf5 21. Qb3 Qxb3 22. Rxe8+ Rxe8 23. cxb3 c6 24. Be3 $14 { KOmodo12}) (15. Rfe1 f6 16. Nd3 Be6 17. h3 $14 {Komodo12}) 15... Kxf7 16. Bxc7+ Qf6 {naturally} 17. Qh5+ {maybe something will turn up?} Kg8 $2 {and it does} ( 17... Qg6 $1 {defends the N on e4} 18. Qxd5+ Be6 19. Qc6 (19. Qb7 Kg8 20. d5 Bf5 21. Rfe1 Qf7 $17 {pm analysis, Wh does not have enough for the piece}) 19... Rac8 20. Rfe1 Re7 21. Rxe4 Rexc7 22. Rf4+ Kg8 23. Qxa6 Rc6 24. Qb5 Rxc3 25. a4 Rxc2 26. h4 Bc4 27. Qd7 Qe8 28. Qxe8+ Rxe8 29. a5 Ra8 $17 {doen't look that promising for Wh, though perhaps it might hold with the advaned a pawn}) ( 17... Kf8 {Wh thought was Ok for Bl as well , but Komodo12 has other thoughts} 18. Qxd5 Qe7 {Komodo12} (18... Bf5 {seen & pm analysis, missing} 19. f3 $4) 19. Qxa8 Qxc7 20. Qd5 Nxc3 21. Qf3+ Kg8 22. Rfe1 Rf8 23. Qd3 Bf5 24. Qxa6 $14) 18. Qxe8+ $18 Kh7 19. Be5 Qg5 20. f4 (20. h4 {Komodo12} Qg6 (20... Qxh4 21. Qc6 $18 ) 21. Qxg6+ Kxg6 22. Rfb1 $18) 20... Qg4 21. h3 (21. f5 $18 {Komodo12} Nxc3 22. Qc6 (22. f6) 22... Ne2+ 23. Kh1 Rb8 24. Bxb8 Bxf5 25. Rxf5 Qxf5 26. Be5 $18) 21... Qh4 22. Qf7 (22. f5 Qg5 23. Qc6 Bxf5 24. Rxf5 Qxf5 25. Qxa8 $18 {Komodo12 }) 22... Nf6 23. Bxf6 (23. f5) (23. Rab1) 23... Qxf6 24. Qxf6 (24. Qxd5 Rb8 25. Qe5 {Komodo12}) 24... gxf6 25. f5 {keeping the K bottled up} Bd7 26. Rae1 (26. c4 dxc4 27. Rae1 {Komodo12- creates a passed pawn}) 26... Rd8 27. Re7+ Kg8 28. g4 (28. Rf3 {Komodo12, considered}) 28... Ba4 29. Rb1 (29. Rfe1) 29... h5 30. Rbb7 (30. Rb6) 30... hxg4 31. hxg4 Bxc2 32. Kf2 (32. Rg7+ Kh8 33. Rg6 Rf8 34. Rb2 $18 {Komodo12}) 32... Bd3 33. Rg7+ (33. Kg3 Rc8 34. Kf4 Bb5 35. g5 fxg5+ 36. Kxg5 Bd3 37. Kg6 {pm analysis- trying for a quick mate} Rc6+ {Komodo12} 38. Kh5 Kf8 39. Rf7+ Kg8 40. f6 {and it's winning, but nothing fast} Rc8) 33... Kh8 34. Rh7+ (34. Rgf7 {picks up a pawn}) 34... Kg8 35. Rbg7+ Kf8 36. Rh8+ (36. Rg6 ) 36... Kxg7 37. Rxd8 Bc4 38. a3 Bb3 39. Kg3 (39. Rd7+) 39... a5 40. Rd7+ Kh6 41. Kf4 a4 42. Rf7 Bc2 43. Rxf6+ Kg7 44. Ke5 1-0 [Event "DyfedLeague:AberystwythU-Aberystwyth"] [Site "?"] [Date "2019.04.09"] [Round "?"] [White "Hardman, Dan"] [Black "Watkin-Jones, A."] [Result "0-1"] [ECO "B23"] [WhiteElo "1324"] [BlackElo "1928"] [Annotator "kemen"] [PlyCount "54"] [EventDate "2019.??.??"] {[%evp 0,11,19,28,70,49,50,46,52,44,38,35,25,10]} 1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bc4 (5. Bb5) 5... e6 6. O-O {main} (6. f5 {has been played in some 2500 games}) 6... Nge7 7. d3 {main} (7. a3 {preserves the B}) 7... O-O 8. Qe1 {main} (8. a3) (8. Bb3) (8. f5) 8... d5 9. Bb3 d4 (9... Nd4 {main}) (9... Na5 {mentioned in passing by Gawain Jones 2008:25}) (9... b5 $5 {Rudy in pm analysis, some 40 odd games} 10. Nxb5 Qb6 11. c4 Na5 {2 wh wins,1 draw, 4 Bl wins} (11... Ba6)) 10. Ne2 Na5 (10... b5) (10... a5 11. f5 exf5 12. Qh4 Ne5 13. Bg5 Nxf3+ 14. Rxf3 Re8 15. Nf4 $14 {M Carr-P Orton, Tom Weston Major 2015,1-0}) 11. f5 (11. Bd2 {main- Stockfish10}) 11... Nxb3 12. axb3 exf5 $17 13. Qh4 Nc6 { 0-6} (13... f6 14. b4 b6 15. exf5 Bxf5 16. Ng3 Qd7 {Thole-Grigorian, Niedersachsen ch U18, Rotenburg 2013,0-1}) 14. Bg5 (14. exf5 Qxh4 {0-01}) 14... f6 (14... Qd6 15. Bh6 Bxh6 16. Qxh6 Qf6 17. Ng3 Ne7 {Cwik-Ostrowska, Rewal op, 2010,0-1}) 15. Bh6 (15. Bd2 Ne5 {0-1} (15... g5 {0-1})) 15... fxe4 (15... g5 $19 {Komodo12, considered by Bl} 16. Qh5 Qe8 17. Qxe8 Rxe8 18. Bxg7 Kxg7 19. Ng3 f4 {Otradovec-Hollan, CZE ch tm 2012,0-1;Pejkovic-Khanukov, Leverkusen ch 2003,0-1}) 16. dxe4 Qe7 17. Ng3 Bd7 18. Bxg7 Qxg7 $17 19. Nd2 Ne5 $19 20. Nc4 g5 {the Q is trapped} 21. Nf5 Bxf5 22. Qg3 Nxc4 (22... Bxe4) 23. Rxf5 Ne5 ( 23... Ne3) 24. Ra5 b6 25. Rb5 Qd7 {and a R is trapped} 26. Rxe5 fxe5 (26... Qxb5) 27. Qxg5+ Qg7 0-1 [Event "DyfedLeague:AberystwythU-Aberystwyth"] [Site "?"] [Date "2019.04.09"] [Round "?"] [White "Francis, Matthew"] [Black "Judge, Kieran"] [Result "1/2-1/2"] [ECO "A05"] [WhiteElo "1712"] [BlackElo "1064"] [Annotator "kemen"] [PlyCount "113"] [EventDate "2019.??.??"] {[%evp 0,15,18,32,28,-21,21,21,21,10,23,-3,-2,6,4,3,42,17]} 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O {double King's Indian, as seen in some Tal -Botwinnik world championship games} 5. d3 d6 6. e4 e5 (6... c5) 7. h3 (7. Nbd2 {main}) 7... c6 (7... Nc6 {main}) 8. c4 Re8 9. Nc3 {transposing to an English, near Botwinnik system which has a N on e2} a5 10. Be3 Nbd7 11. Nh2 $146 (11. a3) ( 11. d4) 11... Nf8 12. Qd2 Ne6 13. Ne2 {another N retreat- the Wh pieces have not gone beyond the 3rd rank as yet ( actually Bl has one more piece than Wh on his 3rd rank.} (13. f4 $11) 13... d5 14. exd5 cxd5 15. Qc2 (15. Bh6 $11) 15... d4 $17 16. Bd2 Nc5 (16... e4 $17 {Komodo12}) 17. b4 axb4 18. Bxb4 Nfd7 ( 18... Bf8) (18... Qc7) 19. Qd2 Qc7 (19... e4 $17 {Komodo121}) 20. Ng4 Nf6 ( 20... h5 21. Nh2 e4 $17 {Komodo121}) 21. Nxf6+ Bxf6 22. Bxc5 Qxc5 23. Rab1 Ra7 (23... Ra3) (23... Qa3) 24. g4 b6 (24... Qe7 25. Rb6 Bg5 26. Qb2 Qa3 27. Qb5 Qa4 28. Qxa4 Rxa4 29. Bxb7 Bxb7 30. Rxb7 Rxa2 $11 {Komodo12}) 25. Rb5 Qc7 26. Ng3 Bd7 27. Rb2 Rb8 28. Ne4 Be7 $11 (28... Bg7 $11) 29. f4 b5 {Komodo12} (29... exf4 {may be safer} 30. Qxf4 Qxf4 31. Rxf4 Kg7 $15) 30. cxb5 Rxb5 (30... exf4 31. b6 Rxb6 32. Rxb6 Qxb6 33. Qxf4 Be6 $17 {Komodo12}) 31. Rxb5 (31. Rc2 Qb8 32. f5 $11 {Komodo12}) 31... Bxb5 32. f5 Qa5 33. Qh6 (33. Qc2 Qa3 $15 {Komodo12 } (33... Qxa2 34. Qc8+ Bf8 35. Nf6+ Kg7 36. Nd5 $14)) 33... Ra6 (33... Bxd3 $19 {Komodo12} 34. Rd1 (34. Rc1 Qd8 $19) 34... Bxe4 35. Bxe4 Bf8 36. Qd2 Qxa2 37. Qxa2 Rxa2 $19) 34. fxg6 (34. Ng5 Bxg5 35. Qxg5 Bxd3 36. Rc1 Kg7 37. Qe7 Ra7 ( 37... e4 38. f6+ Rxf6 39. Rc8 Qe1+ 40. Kh2 Rf2 41. Qf8+ Kf6 42. Qd8+ Kg7 $11) 38. Qd6 (38. f6+ Kh6 39. Qf8+ Kg5 $19) 38... f6 39. g5 fxg5 40. f6+ Kh6 41. Qf8+ Kh5 42. Bf3+ Kh4 43. Qh6+ Kg3 44. Qxg5+ Kxf3 45. Qg2+ Ke3 46. Qf2+ Ke4 47. f7 Rxf7 48. Re1+ Qxe1+ 49. Qxe1+ Kd5 50. Qa5+ Ke6 51. Qb6+ Kd5 52. Qa5+ $11 { Komodo12}) 34... Rxg6 35. Qh5 Qxa2 (35... Bxd3 {the kibitzers at first thought this would be winning, however the Engines show otherwise'} 36. Rxf7 { anticipated, but} (36. Rc1 Bxe4 (36... Kg7 $19) 37. Bxe4 Bg5 38. Rb1 Kg7 39. Rf1 Qd2 40. Bxg6 hxg6 41. Rxf7+ Kxf7 42. Qh7+ Kf6 43. Qh8+ Ke6 44. Qg8+ Ke7 45. Qg7+ Kd6 46. Qf8+ Kd5 47. Qa8+ Kc4 $19 {Komodo12}) 36... Kxf7 37. Qxh7+ Rg7 38. Qh5+ $1 {draws} (38. Qf5+ {loses in various ways} Kg8 (38... Ke8) 39. Qc8+ Qd8 (39... Bd8)) 38... Kf8 (38... Ke6 39. Qf5+ Kd5 40. Qd7+ Kc4 41. Qe6+ Kb5 42. Qxe5+ Ka6 43. Qxg7 Bxe4 44. Qxe7 Bxg2 45. Qe2+ Kb6 46. Kxg2 Qc3 47. g5 d3 48. Qe6+ $11 {Komodo12}) 39. Qh8+ Rg8 40. Qh6+ Ke8 41. Nf6+ Bxf6 42. Qxf6 {and, despite all the Bl pieces standing round, Wh has a perpetual- Stockfish10}) ( 35... Qc7 {keeps a small advantage for Bl- both Engines} 36. Qf5 Bh4 37. Rf3 Kg7 $15 {Komodo12}) 36. Qxe5 $16 Bxd3 37. Rf2 {Wh was running short of time here} (37. Qxe7 Bxf1 38. Qd8+ Kg7 39. Qxd4+ Kg8 40. Bxf1 $16 {Komodo12}) 37... Qb1+ (37... Qa7 38. Bf1 Bxe4 39. Bc4 Rf6 40. Rxf6 Bxf6 41. Qxf6 d3+ 42. Kf1 Qd7 43. Bb3 Bg6 44. Bd1 Qd5 $17 {Komodo12}) 38. Kh2 (38. Bf1 Bxf1 39. Rxf1 Re6 ( 39... Qb7 40. Qxd4 Qb6 $11) 40. Qf4 Qxe4 41. Qxf7+ Kh8 42. Qe8+ Kg7 43. Qf7+ Kh6 44. Qh5+ $11 {Komodo12}) 38... Bxe4 (38... Qb4 $15 39. Nf6+ Bxf6 40. Rxf6 Rxf6 41. Qxf6 Bc2 42. h4 Qc5 43. h5 h6 44. Qxh6 Qe5+ 45. Kh3 Bd1 $17 {Komodo12} ) 39. Bxe4 (39. Qxe7 Qb8+ 40. Kg1 f5 $11 {Komodo12}) 39... Bd6 40. Bxb1 Bxe5+ { Wh tried to play Bxg6 here, & BL was eventually given extra time on the clock} 41. Kg2 Rd6 {the game should now be a draw since Bl is unable to force his d pawn any further forward} (41... Rb6 $5) 42. Bd3 Kg7 43. Rf5 f6 44. Rh5 (44. g5 $5) 44... h6 45. Rf5 Rb6 46. Rf2 (46. Kf3 Rb2 47. Ke4 Rh2 48. Rf3 {all the Wh pieces on wh, & the Bl ones on bl}) 46... Rb3 47. Rf3 Rc3 48. Kf1 (48. Be4) 48... Kf7 49. Ke2 Ke7 50. Rf1 Kd6 51. Rf3 Ra3 52. Rf1 Ra2+ 53. Kd1 (53. Kf3 Rh2 {would give Bl some winning chances}) 53... Rh2 (53... Ra1+ 54. Ke2 Rxf1 55. Kxf1) 54. Rf3 Kc5 55. Bf1 Kd5 (55... Kb4 56. Be2) 56. Bd3 Rg2 57. Bf1 {(draw?)} 1/2-1/2 [Event "DyfedLeague:AberystwythU-Aberystwyth"] [Site "?"] [Date "2019.04.09"] [Round "?"] [White "Barker, Kit"] [Black "Holman, Sam"] [Result "0-1"] [ECO "B53"] [WhiteElo "1000"] [BlackElo "1370"] [Annotator "kemen"] [PlyCount "80"] [EventDate "2019.??.??"] {[%evp 0,12,27,19,53,50,75,61,63,47,65,-5,-11,-66,-18]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Bb5+ (4. Nxd4) (4. Qxd4) 4... Nc6 (4... Bd7 {main}) 5. Bxc6+ { this strengthens Bl's centre & gives a useful open b file, as well as ceding the 2 Bs} (5. Qxd4) (5. Nxd4) 5... bxc6 6. Nxd4 Qb6 (6... c5) (6... Qc7 { main moves}) 7. O-O (7. Nc3 {0.5-1.5}) 7... e5 (7... Nf6 8. Nc3 g6 9. Nb3 Bg7 { 4 Bl wins, 3 draws}) 8. Nb3 (8. Nf5 $11 {Cloud Engines}) 8... Nf6 9. Be3 Qc7 10. N1d2 Be7 $15 11. Bg5 h6 12. Bxf6 Bxf6 13. c4 (13. Nc4 Be7 14. Ne3 O-O 15. c4 Be6 $15 {Komodo12, Bl's pawns are potentially more mobile}) 13... O-O 14. c5 d5 $17 15. Re1 Bb7 {a bit of a deadend for the B} (15... Be6 {more natural}) 16. a4 {weakens the b file} (16. Rc1) 16... Bg5 (16... Rab8 $17) 17. Nf3 Bf6 18. Nfd2 Rfd8 19. Qc2 d4 (19... Rab8 20. Ra3 Ba6 $17 {leaves the pawn centre where it is for the moment}) 20. Nf3 (20. Nc4 {is worth a try} Be7 21. Nba5 Rab8 (21... Bxc5 22. Nxb7 Qxb7 23. Nxe5 $11) 22. b4 Ba6 23. Rab1 Bc8 $15 { Komodo12}) 20... Ba6 21. Rad1 Rd7 22. Qd2 (22. Nc1 Rb8 23. Nd3 {blockading the most advanced Bl pawn, looks advisable} Rdd8 $17) 22... Rb8 23. Qa5 (23. Na5 { must be better}) 23... Qc8 $19 24. Nbxd4 (24. Nc1 Rxb2 25. Rd2 Bd8 {Komodo12- is even worse as the Q has no escape route}) 24... exd4 25. e5 Bd8 26. Qd2 d3 $19 27. Qe3 (27. e6 $5) 27... Rb3 (27... Rdb7) (27... Re7) (27... Rxb2) 28. Nd4 Rb4 29. e6 {other moves are not much better as the Bl pieces dominate the board } fxe6 (29... Rdxd4 {is quite safe} 30. exf7+ (30. e7 Bxe7 31. Qxe7 Rxb2 $19) 30... Kxf7 31. Qe8+ Kf6 32. Re3 Bc7 33. Qe7+ Kg6 34. Re6+ Kh7 $19 {Komodo12}) 30. Qxe6+ Rf7 {this gives Wh chances} (30... Kh7 $1 31. Nxc6 Rxb2 32. Ne5 Re7 33. Qg6+ Kg8 34. Ng4 Kh8 35. Rxe7 Bxe7 36. Nxh6 Bc4 37. Nf5 Bf8 $19 {Komodo121} ) 31. Qe8+ {but not this way} (31. Nxc6 Qxe6 (31... Rxb2 32. Qxc8 Bxc8 33. Re8+ Kh7 34. Rxd8 {transposes to next line}) 32. Rxe6 Rxb2 33. Nxd8 Rfxf2 34. Rxa6 Rxg2+ 35. Kh1 Rxh2+ 36. Kg1 $11 {Komodo12}) (31. Qxc8 Bxc8 32. Nxc6 Rxb2 33. Re8+ Kh7 34. Rxd8 Rfxf2 35. Rxc8 Rxg2+ 36. Kh1 Rxh2+ 37. Kg1 Rbg2+ 38. Kf1 Rg3 {Komodo12 does not consider this move until it's brought to irs attention} 39. Rd8 Rg6 40. R8xd3 Rxc6 $17 {Stockfish10}) 31... Rf8 $19 32. Qg6 Rxd4 33. Re8 Qd7 34. Rxf8+ Kxf8 35. Kf1 d2+ 36. Kg1 Bd3 (36... Be2 37. Qb1 Bxd1 38. Qxd1 Re4 ) 37. Qg3 Bc2 (37... Be2) 38. Qf3+ Bf6 39. h3 Bxd1 40. Qxd1 Rc4 0-1

Wednesday, 3 April 2019

Curse of the Blogger

Once before this season I posted about how well Aberystwyth was doing and then immediately had to retract after an unexpected defeat. Now the same thing has happened again: our shock victory over Cardigan A was followed by an equally surprising loss to Steynton A, a serious setback in our attempt to retain the Dyfed League title. Rudy van Kemenade weakened his kingside against Martin Jones's Bishop's Opening, and found himself under pressure. Though he got back on terms at times during the game, he eventually lost a difficult ending. Adam Watkin-Jones's game against Mark Paffard was one of those where hostilities never really get started, and finished early in a draw. Julie van Kemenade found herself in an awkward pin against David Pinch, and only emerged in a losing ending. On the plus side for Aber, James Cook won a pawn early against Scott Hammett's Latvian Gambit, and picked up several more for a comfortable win. The match finished 2½-1½ to Steynton A.

As a reminder that chess is not all about matches, I throw in an entertaining club night game between Kieran Judge and myself.

[Event "DyfedLeague:Aberystwyth-SteyntonA"] [Site "?"] [Date "2019.03.25"] [Round "?"] [White "Jones, Martin C"] [Black "Van Kemenade, R."] [Result "1-0"] [ECO "C24"] [WhiteElo "1733"] [BlackElo "2021"] [Annotator "kemen"] [PlyCount "149"] [EventDate "2019.03.23"] {[%evp 0,11,22,15,25,23,9,9,13,24,38,36,30,18]} 1. e4 e5 (1... d6 2. d4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. Be3 c6 6. Qd2 Be7 7. Be2 h6 8. h3 Qc7 9. O-O Nf8 10. dxe5 dxe5 11. a3 g5 12. Rad1 Ng6 {M Jones-Van Kemenade, Dyfed League 2016,1-0}) 2. Bc4 Nf6 3. d3 c6 4. Nf3 Be7 5. O-O d6 6. c3 (6. Re1 {main}) (6. a4 h6 7. Nbd2 Nbd7 8. Re1 Nf8 9. d4 Qc7 10. c3 {Kett-Van Kemenade, WLS ch 2018,1/2-1/2}) 6... h6 7. Nbd2 Nbd7 8. Bb3 (8. Re1 Qc7 9. Nf1 d5 10. Bb3 dxe4 11. dxe4 Nc5 12. Bc2 Bg4 {Heap-Van Kemenade, Dyfed League 2015,1/2-1/2}) 8... Nc5 {Stockfish10} ( 8... Nf8 9. d4 Qc7 10. Re1 g5 11. Nf1 Ng6 12. Ne3 Nf4 13. Nf5 Bf8 14. g3 Ng6 { Kett-Van Kemenade, ECF blitz qual 2018, Cardiff 2018,1/2-1/2}) 9. Bc2 Ne6 10. Re1 Qc7 11. Nf1 g6 12. a4 Nh5 13. d4 Nhf4 14. dxe5 dxe5 15. Ne3 Bf6 {leads to a slightly awkward position for Bl's K, but Stockfish10 thinks it should be OK, even though it as usual has some tactics to show} (15... O-O $15 {Stockfish10- Bl's first idea, but thought it lost a pawn after} 16. Ng4 {however Stockfish ignores this} (16. Nc4 Rd8 17. Bd2 Ng5 18. Ncxe5 {transposes}) 16... Rd8 17. Bd2 (17. Nd2 h5 18. Ne3 a5 $19) 17... Ng5 18. Ngxe5 Bf6 19. Qc1 Bxe5 (19... Rxd2 20. Qxd2 Bxe5 21. Nxe5 Qxe5 $17) 20. Nxe5 Nfh3+ 21. gxh3 Nxh3+ 22. Kg2 Qxe5 $17 23. Bxh6 $2 Qh5 $19 24. Bd1 (24. Qe3 g5 $19) 24... Qh4 25. Be3 Bg4 26. Kf1 Bxd1 27. Rxd1 Qxe4 $19) (15... f6 {considered, but looked to be a bit loosening, though it does stabilize the e5 pawn. However Stockfish10 shows how Wh could exploit this.} 16. Nh4 {keeps threatening invasion on f5} (16. Nd5 { also} cxd5 (16... Nxd5 17. exd5 Nf8 18. a5 $18) 17. exd5 Kf7 (17... Ng5 18. Bxf4 Nxf3+ 19. Qxf3 exf4 20. d6 Qxd6 21. Rad1 Qc7 22. Bxg6+ Kf8 23. Qd5 Bc5 24. Bh5 Kg7 25. b4 Bf8 26. Re8 $18) 18. dxe6+ Nxe6 19. Nh4 Nf8 20. a5 Be6 21. Qf3 f5 22. Nxf5 gxf5 23. a6 Rb8 24. Bxf5 Bf6 25. axb7 Bxf5 26. Qxf5 Rxb7 27. h4 $11 ) 16... Kf7 (16... O-O 17. Nxg6 Nxg6 18. Nf5 Ngf4 19. g3 Nh3+ 20. Kg2 Neg5 21. Qh5 Bxf5 22. exf5 Bc5 23. f4 $18 {Stockfish10}) 17. Nef5 Rd8 {it seems other moves lose as well} (17... Qd8 18. Bd2 Kg8 19. Bxf4 Nxf4 20. Nxg6 Nxg6 21. Qh5 Bxf5 22. Bb3+ Kg7 23. exf5) 18. Nxh6+ Ke8 19. Qg4 Nd4 20. N4f5 gxf5 21. Qg8+ Kd7 22. Qh7 Nxc2 23. Rd1+ Nd5 24. Nxf5 $18 {Stockfish10}) (15... Ng5 { Stockfish10 is a path to equality} 16. Bb3 (16. Nc4 Bg4 17. Bxf4 exf4 18. Qd4 O-O 19. Nxg5 hxg5 $15) 16... O-O 17. Nxg5 hxg5 $11) 16. Nc4 (16. Nd5 cxd5 17. exd5 Kf8 18. dxe6 Nxe6 (18... Bxe6 19. Bxf4 exf4 20. Bxg6 $16) 19. Qe2 Nf4 20. Qe4 Bf5 21. Qb4+ Be7 22. Qb3 Bxc2 23. Qxc2 Bf6 24. Qe4 Rd8 $14 {Stockfish10}) 16... Ke7 17. Be3 Rd8 (17... b6 18. Bb3 g5 19. g3 Nh3+ 20. Kh1 h5 21. Ng1 Nxg1 22. Kxg1 h4 23. Qf3 Rg8 24. Kh1 $16 {Stockfish10}) 18. Qc1 g5 19. g3 {the N needs shifting if Wh wants to put Rs on the d file} Nd3 $6 {an afterthought- Bl was too hopeful about being able to make some use of the weakenened wh squares around Wh's K} (19... Rg8 {considered for a while, when it is actually quite dangerous for Wh to take the piece} 20. Kh1 (20. Bxf4 gxf4 21. b3 Ng5 22. Qa3+ c5 23. Nxg5 hxg5 24. Rad1 Be6 25. Nd6 Rh8 $15) 20... Kf8 21. gxf4 gxf4 22. Bd2 Ng5 23. Nxg5 hxg5 24. Rg1 Be6 25. b3 g4 $11 {Stockfish10}) (19... Nh3+ { simplest} 20. Kg2 b6 21. Ng1 (21. Kxh3 $2 Nf4#) 21... Ba6 (21... Nxg1 22. Kxg1 Kf8 23. Bd1 Kg7 $14) 22. Nxb6 Nhf4+ 23. gxf4 axb6 24. f5 Nf4+ 25. Bxf4 exf4 26. e5 Bxe5 27. Nf3 f6 28. Nd4 Rd6 29. Be4 Bb7 $14 {Stockfish10}) 20. Bxd3 Rxd3 21. Qc2 {now Wh gains quick entry to the d file} Rd8 (21... Rd7 22. a5 (22. Red1 b6 23. Rxd7+ Bxd7 24. Rd1 Rd8 $14) 22... Bg7 23. h4 f6 24. hxg5 hxg5 25. b4 Kf7 26. Qe2 $16 {Stockfish10, but Bl is still with some hopes}) 22. Red1 g4 $2 { to relieve the pressure on e5, but Bl's K side pawn structure is now in ruins} (22... b6 23. Rxd8 Nxd8 24. a5 Rb8 25. axb6 axb6 26. h4 Ne6 27. b4 Bd7 $16 { but Bl is clinging on}) 23. Ne1 $18 Bg5 (23... Rh8 24. f4 Kf8 25. Nd3 exf4 26. gxf4 Be7 27. Kh1 $18 {the Bl pieces are huddled in corners, while the Wh ones take over the centre}) 24. Rxd8 Nxd8 (24... Qxd8 25. Rd1 (25. Nxe5 Bxe3 26. fxe3 Ng5 $11) 25... Qc7 26. Qe2 h5 27. h3 $18) (24... Kxd8 25. Rd1+ (25. Qd1+ Ke8 26. Qxg4 Nf4 27. Qd1 Nh3+ 28. Kg2 Be6 29. Nd6+ (29. Qd6 Qxd6 30. Nxd6+ Kd7 31. Bc5 b6 32. Ba3 Be7 33. Nxf7 Bxf7 34. Kxh3 $18) 29... Kf8 30. Bxg5 Nxg5 31. h4 Nh7 32. Qd2 Kg8 33. f4 $18) 25... Ke8 26. Qe2 Bxe3 27. Qxe3 Ng5 28. f4 $18 { Stockfish10-but both these recaptures are better than allowing access to d6.}) 25. Bc5+ Ke6 (25... Kf6 26. Bd6 Qd7 27. Rd1 Qe8 28. Bxe5+ Kg6 29. f4 $18 { Stockfish10}) 26. Rd1 (26. Nd6 $1 {preferred by Stockfish10} Bd7 27. f4 gxf3 28. Nxf3 Be7 29. Rd1 {when all of Wh's pieces are in action}) (26. Bd6 Qd7 27. Rd1 Qe8 28. Bc7 Be7 29. Nd6 Qf8 (29... Qd7 30. Nf5 Qxc7 31. Ng7+ Kf6 32. Ne8+ Kg6 33. Nxc7) 30. Nf5 b6 31. Nxe7 $18) 26... Be7 27. Bd6 (27. Rd6+ Bxd6 28. Nxd6 b6 29. Ne8 Qb8 30. Qd2 bxc5 31. Qxd8 f6 32. Nc7+ {and Bl has to give up the Q to avoid a mate in 14. However, there are many ways for Wh to proceed & humans are better off usually following simpler lines.}) 27... Bxd6 28. Rxd6+ ( 28. Nxd6 {Stockfish10, when Bl's best appears to be to give up the Q, as} Ke7 29. Qd2 b5 30. Qxh6 Be6 31. Qh8 {and Wh keeps picking up pawns}) 28... Ke7 29. Qd2 {this gives away all the advantage, though fortunately for Wh, Bl chooses the wrong move , & there still is a win for Wh.} (29. Rxh6 Be6 {simplest , should be a win , though Bl retains some hopes with only a pawn in arrears}) 29... f6 (29... Be6 $1 {Stockfish , is the accurate way to get a near level position.} 30. Rxe6+ (30. Qxh6 Bxc4 31. Qf6+ Ke8 32. Qh8+ Ke7 33. Qf6+ {draws} (33. Rd2 Rc8 $11 {Bl has compensation for the pawn})) 30... Nxe6 31. Qxh6 Rg8 32. Ne3 Qd7 {and compared with the game continuation, Bl has unravelled his position- Wh can still go for a repetition} (32... Qd8 33. Qh5 Qd2 34. Kf1 Qxb2 35. Qxe5 Kd7 36. Qf6 Rf8 37. Nxg4 $14 {Stockfish10}) 33. Qh4+ Kf8 34. Qh6+ Ke7 35. Qh4+ $11) 30. Qxh6 $18 Be6 31. Qg7+ Nf7 32. Rxe6+ Kxe6 33. Nd3 {if a Q & 1 N is a dangerous combination, then a Q & 2 Ns even more so. Although an exchange up, the Bl R is out of the game.} (33. Qxg4+ {Stockfish10- simplest} Ke7 34. Ne3 Nd6 35. Qg7+ Kd8 36. Qxf6+ Qe7 37. Qh8+ Qe8 38. Qg7 Rc8 39. Nf3 { and Bl has trouble holding} Rc7 40. Qf6+ Qe7 41. Qg6 Rd7 42. Nf5 Nxf5 43. Qxf5 Qf7 44. Qxf7 Rxf7 45. Nxe5 {4 pawns for the exhange is more than enough}) 33... Ke7 (33... b6 {keeps a N out of c5, however} 34. Qxg4+ Ke7 35. Ne3 Qd7 36. Nf5+ Kd8 37. Qg8+ Qe8 38. Qg6 Qe6 39. Qg8+ (39. Ng7 Qe7 40. Nh5 Kc7 41. Nxf6 Rd8 42. Nb4 Rd6 43. Nfd5+ cxd5 44. Nxd5+ Rxd5 45. exd5 Nd6 46. h4 $16) 39... Qe8 40. Qg7 Qe6 41. g4 Rc8 42. h4 $18 {the pawns will decide, Stockfish10}) (33... Rh8 {also considered} 34. Nc5+ Ke7 35. Ne3 Ke8 36. Nxg4 $18 {Stockfish10}) 34. Ne3 Re8 (34... b6 {Stockfish10, had to be tried} 35. Nb4 Rd8 36. Nf5+ Ke6 37. Qxg4 Qd7 38. Kg2 Rc8 (38... Rf8 39. Nxc6 $18) 39. Nh6+ Ke7 40. Qxd7+ Kxd7 41. Nxf7) 35. Nf5+ Kd8 36. Qxf6+ Kc8 {escape?} 37. Qxf7 $1 Qxf7 38. Nd6+ Kc7 39. Nxf7 { and Wh should have an easy win =- the Ns gobble up the remains of Bl's K side & the R has nowhere it can enter. However...} Kb6 40. Nfxe5 c5 {there are lots of ways forward for Wh} 41. f4 (41. Nxg4 Rxe4 42. Nde5 Re1+ 43. Kg2 Kc7 44. h4 {and the pawns surge through, the R is unable to get anything on the Q side} Kd6 45. f4 Rb1 46. h5 (46. Nc4+ Kd5 47. Nge3+ Ke6 48. h5 {keeps material if desired}) 46... Rxb2+ 47. Nf2 b5 48. h6 Rd2 (48... bxa4 49. Nc4+ Kc6 50. Nxb2 a3 51. Nbd3 a2 52. h7 a1=Q 53. h8=Q {and Bl gets mated soon}) 49. Nc4+) (41. h4 gxh3 42. f4 Rc8 43. b3 {Stockfish10, the R is barricaded out}) 41... gxf3 42. Kf2 Ka5 43. b3 (43. Nc4+ Kxa4 44. Nxc5+ Kb5 45. Nd6+ Kxc5 46. Nxe8 {ends all Bl's desperation hopes}) 43... b5 44. axb5 Kxb5 45. Kxf3 Rd8 46. c4+ Kb6 47. g4 Rf8+ 48. Nf4 {the N was doing a good job where it was on d3, preventing Bl entry on b4} (48. Kg3 Rf1 49. h4 {and the pawns march through together} (49. Nd7+ Kc6 50. N7xc5 {also} Rg1+ 51. Kf3 Rf1+ 52. Kg2 Rf8 53. h4)) 48... Rh8 49. h3 (49. g5 {as the R cannot return in time if it takes the pawn} Rxh2 50. g6 Rh8 51. Nd5+ Kb7 (51... Ka5 52. g7 {Stockfish10 goes for mate} (52. Nf6 { is goodenough}) 52... Rg8 53. Nd7 a6 (53... Rxg7 54. Nxc5 {mating}) 54. Ne7 Rxg7 55. Nc6#) 52. Nf6 {forces the pawn through}) 49... Ka5 50. g5 (50. Ned3 { ends all Bl hopes}) 50... Kb4 51. g6 Kxb3 52. g7 {this should still be fine for Wh, amongst many other possibilities} (52. h4 a5 53. h5 (53. Ned3 Kxc4 54. h5 a4 55. g7 Rg8 56. h6 a3 57. h7 (57. Nc1) 57... Rxg7 58. h8=Q Ra7 59. Nd5 { mate in 6}) 53... a4 54. g7 Ra8 55. h6 a3 56. Ned3 Kc2 57. h7 a2 58. h8=Q a1=Q 59. e5) 52... Rg8 53. Ne6 a5 {Ns have trouble stopping a R pawn when its K is near , as they can only come from one direction. Also, with scattered Wh pawns the R has the freedom of movement its powers need. Instead of an easy rollover, Wh must now be very careful} 54. Nxc5+ (54. Nd7 {Stockfish10-uses the other horse- there is no need to give up the pawn that has advanced so far.} Kxc4 ( 54... a4 55. Ndxc5+ Kb4 56. Nxa4 Kxa4 57. h4 {clearly useless}) 55. h4 a4 56. Nb6+ Kb4 57. Nxa4 Kxa4 58. h5 (58. Nxc5+ Kb5 59. Ne6) 58... c4 59. h6 c3 60. h7 (60. Nd4 {simplest}) 60... c2 61. Nc5+ Kb5 62. hxg8=Q c1=Q 63. Qb8+ Kc6 64. Qb7+ Kd6 (64... Kxc5 65. Qc7+) 65. Qb6+ Ke7 (65... Ke5 66. Nd3#) 66. Qe6+ Kd8 67. Qd7# {unless Wh wants to play with another Q?}) 54... Kb4 (54... Kc3 55. Ned7 Rxg7 56. e5 Kxc4 57. Ke4 $18 {Stockfish10}) 55. Ncd3+ (55. Ne6 { Stockfish10} a4 56. Nd3+ Kc3 57. Nc1 Kb2 58. c5 Kxc1 59. c6 a3 60. c7 a2 61. Nf8 a1=Q 62. c8=Q+ Kd1 63. Qd8+ Kc1 64. Qg5+ Kc2 65. Qc5+ Kd2 66. Qd5+ Ke1 67. Qxg8 (67. Ne6 {keeps the Q central & threatens mating net})) 55... Kc3 $16 56. Nc5 {both Ns now obstruct their pawns} (56. Nc1 a4 57. c5 (57. Ke3) 57... Rxg7 58. Ne2+ Kb4 59. Nd3+ Kc4 60. Nb2+ Kb4 61. c6 (61. Nxa4 Kxa4 {Drawn- Lomonosov tablebases}) 61... a3 62. Nd3+ Kb5 63. Ne5 Kb4 64. Nc1 Kc3 $11 {Stockfish10}) 56... Rxg7 $11 {Stockfish10} 57. Na4+ (57. h4 Re7 58. Kf4 Rh7 59. Kg5 Kd4 60. Kg6 Rh8 61. Ned7 a4 62. Nxa4 Rxh4 63. e5 Kxc4 $11 {Stockfish10, as 2 Ns & K vs K is drawn}) 57... Kb4 58. Nb2 Rh7 {perhaps Bl was trying to win here, getting the R to take the N on b2} (58... a4 $1 {Stockfish10} 59. Ned3+ (59. Nxa4 Kxa4 $11) (59. Nc6+ Kb3 $11 (59... Kc5 $11)) 59... Kc3 60. Nxa4+ (60. Nd1+ Kd2 $19) 60... Kxd3 61. Nc5+ Kxc4 $11) 59. Kg4 Rg7+ (59... Kb3 60. Ned3 Kc3 61. h4 a4 $11) (59... a4 60. Nxa4 Kxa4 61. Ng6 $18 {Wh mates in 39- Lomonosov tablebases} (61. h4 $18 {Wh mates in 45 -Lomonosov tablebases})) 60. Kf3 (60. Kf5 $18 { Stockfish10} Rg2 61. Ned3+ Kb3 62. e5 a4 (62... Rxb2 63. Nxb2 Kxb2 64. e6 { Wh wins the race}) 63. Nxa4 Kxa4 64. e6 $18) 60... Rh7 $11 (60... a4 $11) ( 60... Kb3 $11) (60... Kc3 $11) 61. Kg3 Rg7+ (61... a4 62. Nxa4 Kxa4 $11 { Lomonosov}) (61... Kc3 $11) (61... Rc7 $11) 62. Kf4 Rg2 $2 (62... Rh7 $11 63. Kf5 a4 $11) (62... Kb3 63. Ned3 Kc3 64. e5 a4 $11 {Stockfish10} 65. Nxa4+ Kxd3 66. e6 Kxc4 67. Ke5 Ra7 68. Nb6+ Kc5 69. Kf6 Ra3 70. e7 Rf3+ 71. Ke6 (71. Kg7 Rg3+ 72. Kf8 Rf3+ 73. Ke8 Kxb6 $11) 71... Rxh3 72. Nd7+ Kd4 $11 {Stockfish10}) 63. Nbd3+ $16 (63. h4 $18) (63. Kf5 $18) 63... Kc3 64. c5 (64. Nc5 Rh2 65. Kg3 Rh1 66. h4 Kd4 67. Ned7 Kxc4 $11) (64. Nc1 a4 $11) 64... a4 65. c6 Rg7 $2 { Bl worried about being cut off by a N from the backrank} (65... a3 $1 66. c7 ( 66. Ng4 $2 Kxd3 $19 {missed by Bl that the R can stop the pawn}) (66. Nc1 Rc2 67. Ne2+ (67. Ned3 Kd2 68. e5 Rxc6 69. h4 a2 70. Nxa2 Rc4+ 71. Kg5 Kxd3 72. h5 Re4 73. Kf5 Rh4 $11 {Stockfish10}) 67... Kb2 68. Nd4 Rc3 69. Nb5 a2 70. Nxc3 a1=Q 71. Nd5 Qf1+ 72. Kg3 (72. Nf3 Qc1+ 73. Kf5 Qxc6 {drawn-Lomonosov tablebases}) 72... Qg1+ 73. Kf3 Qf1+ $11) (66. Kf3 Rg1 67. c7 Rg8 68. Nb4 Kxb4 69. Nc6+ Kb3 70. Nd8 a2 71. c8=Q Rf8+ 72. Ke3 a1=Q {repeats an earlier variation}) (66. Ne1 Rg1 67. N5d3 a2 68. Nc2 Kxd3 69. Nb4+ Kc4 70. Nxa2 Rg6 $11 {Stockfish10}) 66... Rg8 67. Nb4 Kxb4 68. Nc6+ Kb3 69. Nd8 a2 70. c8=Q Rf8+ $1 (70... a1=Q 71. Qe6+ $18) 71. Ke3 a1=Q $11 {Stockfish10}) 66. Nc1 $18 (66. Kf5 $18) 66... Kc2 67. Ned3 a3 (67... Re7 68. Kf5 a3 69. e5 Rc7 70. e6 Rxc6 71. e7 Rc8 72. h4 a2 73. Nb4+ Kxc1 74. Nxa2+ Kd2 75. Kg6 Ke2 76. h5 Kf3 77. h6 Ke4 78. h7 Kd5 (78... Kf4 79. Nc3 $18) 79. Kf7 $18) 68. Ke5 Kb1 (68... a2 69. Nxa2 Kxd3 70. Nb4+ Kc4 71. Nd5 Kc5 72. c7 Rg8 73. Ne7 $18 {Stockfish10}) 69. Kd6 Rg3 70. c7 Rxd3+ 71. Nxd3 a2 72. c8=Q a1=Q 73. Qc1+ Ka2 74. Qxa1+ (74. Qc4+ Ka3 75. Qb4+ Ka2 76. Qa4+ Kb1 77. Qb3+ Qb2 78. Qxb2#) 74... Kxa1 75. e5 1-0 [Event "DyfedLeague:Aberystwyth-SteyntonA"] [Site "?"] [Date "2019.03.25"] [Round "?"] [White "Watkin-Jones, A."] [Black "Paffard, Mark"] [Result "1/2-1/2"] [ECO "A50"] [WhiteElo "1928"] [BlackElo "1739"] [Annotator "kemen"] [PlyCount "50"] [EventDate "2019.03.23"] {[%evp 0,15,19,13,8,-30,3,3,34,20,57,50,67,28,44,40,40,40]} 1. Nf3 Nf6 2. c4 e6 3. Nc3 b6 {a little early . but fairly popular, , 4th choice} (3... d5) (3... Bb4) (3... c5) 4. e4 (4. g3 {main}) 4... d6 {74% for Wh} (4... Bb7 {main, 61% for Wh} 5. Bd3 (5. d3)) 5. d4 Bb7 6. Bd3 Be7 (6... Nbd7 7. O-O {68% Wh}) 7. O-O {main} (7. e5 {2-0}) 7... O-O 8. Qe2 $16 {72% Wh} (8. Qc2 $16 {72% for Wh}) (8. e5 $18 {9-0}) 8... Nbd7 9. h3 {main,55%} (9. Rd1 {78%}) (9. b3 {7-0}) 9... c5 ( 9... e5 $16 {3 Wh wins, 1 draw, 4 Bl wins}) 10. d5 e5 11. Bd2 (11. Nh2 h6 ( 11... Bc8 12. Bd2 Ne8 13. Rae1 Bg5 14. f4 (14. Bxg5 Qxg5 15. Bc2 $16) 14... exf4 15. e5 Nxe5 16. Bc2 g6 17. Bxf4 Bxf4 18. Rxf4 Qg5 19. Ref1 Bxh3 20. Ne4 Qxg2+ 21. Qxg2 Bxg2 22. Kxg2 f5 23. Ng5 Ng7 24. b3 h6 25. Ngf3 g5 26. Nxe5 gxf4 27. Ng6 $16 {Franzoni Ladron-Kyrkjebo, Barcelona San Marti op 2017,1-0}) 12. f4 exf4 13. Bxf4 g5 14. Bg3 (14. e5 $18) 14... Ne5 15. Bxe5 dxe5 16. Qf3 $16 { Baumgartner-Moderegger, Bayern ch Seniors, Bergen 2010, 1-0}) 11... Ne8 12. Nd1 g6 13. Bh6 Ng7 14. Ne3 $16 Bc8 15. Nh2 (15. a4 Re8 16. g4 Nf6 17. Qc2 $16 { Komodo12} Kh8 18. Ra3 Ng8 19. Bxg7+ Kxg7 20. a5 Rb8 21. Rfa1 $14 {Bl is prevented from a K side break & Wh has a slight Q side initiative}) 15... Re8 16. f4 $6 {the Wh pawn structure indicates that pawn advances need to be on the Q side as d5 gives Wh space advantage there.} (16. Nhg4 Nh5 17. g3 Ndf6 18. a3 Bf8 19. Bxf8 Kxf8 20. b4 Bd7 21. Rfb1 $14 {Komodo12- last comment applies still}) 16... exf4 17. Bxf4 Nh5 $11 {Wh has lost control over the bl squares} 18. Qf2 (18. Nhg4 Nxf4 19. Rxf4 Bg5 $15 {Komodo12}) (18. Nf5 Nxf4 19. Nxe7+ Qxe7 20. Rxf4 Ne5 21. Raf1 $11 {Komodo12}) 18... Nxf4 19. Qxf4 Ne5 $15 { the Wh minor pieces are worse than their counterparts as they are restricted by their pawn structure} 20. Rad1 Bg5 21. Qf2 Rf8 (21... h5 $15) (21... Qe7 $15 ) 22. Nf3 (22. Nhg4) 22... Nxf3+ 23. Qxf3 Qe7 24. Ng4 Bxg4 25. Qxg4 Qe5 $15 1/2-1/2 [Event "DyfedLeague:Aberystwyth-SteyntonA"] [Site "?"] [Date "2019.03.25"] [Round "?"] [White "Pinch, David"] [Black "Van Kemenade, J."] [Result "1-0"] [ECO "E62"] [WhiteElo "1742"] [BlackElo "1761"] [Annotator "kemen"] [PlyCount "80"] [EventDate "2019.03.23"] {[%evp 0,16,19,31,62,3,39,13,37,19,19,25,19,34,36,21,31,42,58]} 1. d4 d6 2. c4 Nf6 3. Nc3 g6 4. g3 Bg7 5. Bg2 O-O 6. Nf3 Nc6 7. O-O Nd7 (7... a6) (7... e5 { main lines}) 8. a3 {uncommon} (8. e4) (8. b3) (8. Be3) 8... e6 {3-0} (8... e5 { 1-2}) (8... a6 9. e4 {0.5-4.5} (9. e3 {0.5-3.5})) 9. e3 (9. Bg5 f6 10. Be3 e5 11. dxe5 dxe5 12. Qb3 Kh8 13. Rad1 Ne7 14. Bh3 c6 15. Bxd7 Bxd7 16. Qxb7 { Foisor-Skouvaklis, Geneve op 2010,1-0}) (9. d5 Nce5 10. Nd4 Nf6 11. b3 Re8 12. Bb2 a5 13. Rc1 Nfd7 14. h3 Nc5 15. Ncb5 g5 16. b4 axb4 17. axb4 Na4 18. Ba1 Ng6 19. dxe6 fxe6 20. c5 {Puraev-Khatoev, Izmailov mem 2012,1-0}) 9... Ne7 (9... e5 10. d5 Ne7 11. e4 {transposes, 4 Wh wins, 2 draws, 3 Bl wins}) 10. b4 h6 11. Bb2 f5 12. Qd2 Nf6 13. Qc2 a6 14. Rfd1 Qe8 15. a4 Rb8 (15... g5) (15... Bd7) 16. a5 Bd7 $14 17. Nd2 Bc6 {Komodo12} (17... g5 18. b5 (18. Re1 f4 $11 { Stockfish10} (18... Qf7 19. Rac1 f4 $11 {Stockfish10})) 18... f4 $14 {Komodo12} ) 18. e4 g5 (18... fxe4 19. Ndxe4 Nxe4 20. Nxe4 Qf7 21. Ra3 Nf5 (21... g5 22. Qe2 Qg6 23. b5 axb5 24. cxb5 Bd5 25. Rc3 Rbc8 26. h3 Nf5 27. Ra3 Rf7 $11 { Stockfish10}) 22. d5 exd5 23. cxd5 Bxb2 24. Qxb2 Bb5 $14 {Stockfish10}) (18... Qf7 19. d5 exd5 20. exd5 Bd7 21. Ne2 g5 22. Nd4 Ng4 23. Re1 f4 $14 {Komodo12}) 19. d5 $16 exd5 20. Nxd5 Rc8 (20... Nfxd5 21. exd5 Bxb2 (21... Ba4 22. Rxa4 Bxb2 23. c5 Be5 24. Nc4 Ng6 25. Ra3 Qf7 26. Rb3 $16 {Komodo12- Wh has more initiative onthe Q side than Bl has on the K side}) 22. Qxb2 Bd7 23. c5 Ng6 24. cxd6 cxd6 25. Nc4 Qe7 26. Re1 Qf6 27. Qxf6 Rxf6 28. Rac1 Bb5 29. Na3 Ne5 (29... Bd7 30. Rc7 Nf8 31. Nc4 Bb5 32. Bf1 Bxc4 33. Bxc4 Rf7 34. Ree7 Rxe7 35. Rxe7 Ng6 36. Re6 Ne5 37. Bf1 Rc8 38. Rxd6 $18) 30. Nxb5 axb5 31. Red1 f4 32. Bf1 Rbf8 33. Bxb5 fxg3 34. fxg3 Rf2 35. Rf1 Rb2 36. Rxf8+ Kxf8 37. Rc8+ Ke7 38. Rc7+ Kf6 39. Rxb7 Nf3+ 40. Kf1 Nxh2+ (40... Rd2 {aims for a draw by perpetual, but gets stopped by} 41. Be2 Nd4 42. Bg4 $16) 41. Ke1 Rxb4 42. a6 $18) (20... fxe4 21. Nxe4 Nfxd5 22. Bxg7 Kxg7 23. cxd5 Nxd5 24. Nxd6 cxd6 25. Bxd5 Qe5 26. Bxc6 Rbc8 27. Qd2 Rxc6 28. Ra3 $14 {Komodo12- Bl has some loose areas, but with only the heavy pices on looks like holding}) 21. Re1 $16 (21. Nxf6+ Bxf6 22. Bxf6 Rxf6 23. b5 axb5 24. cxb5 Bxb5 25. e5 dxe5 26. Bxb7 Rb8 27. a6 $18 { Komodo12 & Stockfish10}) 21... Bxd5 {gives away the e6 square to Wh} (21... Nfxd5 22. Bxg7 Kxg7 23. exd5 Bd7 24. c5 $16 Qf7 25. Qb2+ Kh7 26. Nc4 dxc5 27. bxc5 Bb5 28. d6 Ng6 29. Na3 Bc6 30. Bxc6 bxc6 31. Qc2 $16 {Komodo12}) 22. exd5 Qf7 23. Re6 $16 Nd7 (23... Ng4) 24. Bxg7 Qxg7 25. Rae1 Rce8 {selfpins are usually dangerous} (25... Rf7 26. c5 Nf8 27. R6e2 f4 $16 {Komodo12}) (25... Ne5 26. c5 N7g6 27. Nb3 f4 28. Be4 Ne7 29. Nd4 Kh8 30. Kg2 $18 {Komodo12}) 26. Nf3 (26. c5 $18 Ne5 (26... dxc5 27. bxc5 f4 28. d6 $18) 27. cxd6 (27. Nc4 Nxc4 28. Qxc4 Rf6 29. cxd6 cxd6 30. Qc7 $18) 27... cxd6 28. Rxd6 $18 {Komodo12}) 26... Nf6 27. Qd3 (27. Nd4 $18 Ng4 28. Qd1 (28. Nxf5 Rxf5 29. Rxe7 Rxe7 30. Rxe7 Qf6 31. Re2 Qa1+ 32. Bf1 Rf6 33. Re6 Kg7 34. Rxf6 Qxf6 35. c5 dxc5 36. bxc5 Ne5 37. Be2 $18 {but not as clear}) 28... Ne5 29. R6xe5 dxe5 30. Ne6 Qf6 31. Nxc7 Rc8 32. d6 $18 {Komodo12}) 27... Ne4 (27... f4 {still worth a try- Wh needs to respond accurately even now to a kingside attack} 28. gxf4 Nh5 29. fxg5 Nf4 30. Qe3 Nxe6 31. gxh6 Qg6 32. dxe6 Nf5 33. Qe4 Rf6 34. h7+ Kxh7 35. h4 Kg7 $11 { Komodo121}) 28. Nd4 $18 Qh7 29. Bxe4 fxe4 30. Qxe4 (30. R1xe4 Rf7 31. Qe3 Kf8 32. h4 $18 {Komodo12}) 30... Rf7 (30... Qxe4 31. R6xe4 Rf7 32. h4 $18 {Komodo12 }) 31. Qxh7+ Rxh7 (31... Kxh7) 32. Nf5 Kf8 33. Nxh6 (33. c5 {even stronger- Komodo12}) 33... Kg7 34. Nf5+ Kf8 35. Nxe7 {simplest- Wh has too many pawns} ( 35. c5 {Komodo12}) 35... Rhxe7 36. Rxe7 Rxe7 37. Rxe7 Kxe7 38. f4 Kf6 39. fxg5+ Kxg5 40. Kf2 Kg4 1-0 [Event "DyfedLeague:Aberystwyth-SteyntonA"] [Site "?"] [Date "2019.03.25"] [Round "?"] [White "Cook, James"] [Black "Hammett, S."] [Result "1-0"] [ECO "C40"] [WhiteElo "1496"] [BlackElo "1533"] [Annotator "kemen"] [PlyCount "107"] [EventDate "2019.03.23"] {[%evp 0,151,29,15,39,35,105,100,150,104,104,104,104,27,27,-16,36,26,26,-24, -23,-30,-1,12,35,-31,46,-20,-37,-92,-6,-6,-30,-30,-10,-29,20,-14,75,81,88,12, 40,15,15,42,44,33,33,-3,25,-9,37,7,90,94,113,46,63,72,95,16,134,130,149,159, 138,143,162,155,157,168,190,183,180,143,416,409,413,310,378,387,412,391,417, 417,458,458,481,477,491,485,493,512,515,515,611,621,620,628,637,632,662,617, 630,598,618,615,640,599,651,651,801,824,844,833,853,641,895,928,985,1023,1044, 935,1044,1479,1726,1391,29979,1012,29979,29980,29981,29984,29987,29984,29993, 29988,29989,29990,29995,29992,29993,29994,29995,29992,29993,29994,29995,29994, 29995,29996,29997,29998]} 1. e4 e5 2. Nf3 f5 3. Nxe5 {main} (3. Bc4 {next}) 3... Qf6 {main} (3... Nc6 {next} 4. Qh5+ (4. Nxc6 dxc6 5. exf5 Bxf5 6. Bc4 Qe7+ 7. Be2 O-O-O 8. O-O Bxc2 $2 9. Bg4+ {O Llywelyn-Hammett, Dyfed League 2015,1-0} ) 4... g6 5. Nxg6 Nf6 6. Qh3 hxg6 7. Qxh8 Qe7 8. Qh4 d5 9. Bb5 { Robinson-Hammett,Dyfed League 2016,1-0}) 4. d4 (4. Nc4 fxe4 5. Nc3 Qg6 6. Ne3 Nf6 7. Bc4 Bc5 8. O-O {Bonutto-Hammett, John Bishop Minor 2016,1-0}) 4... d6 5. Nc4 (5. Nf3 fxe4 6. Ng1 (6. Qe2) 6... Nh6 7. Bxh6 Qxh6 8. Qe2 d5 9. Nd2 Bd6 10. g3 O-O 11. O-O-O {Osinga-Hammett,Dyfed League 2018,0-1}) 5... fxe4 (5... Nc6 6. c3 Bd7 7. Bd3 Nge7 8. O-O fxe4 9. Bc2 O-O-O 10. Ne3 Qg6 11. Nd2 d5 {o Llywelyn-Hammett, Dyfed League 2015,1-0}) 6. Qh5+ (6. Nc3 {main} Qg6 7. Qe2 Nf6 8. Bf4 Be7 9. O-O-O O-O 10. g3 (10. h3) 10... Bg4 11. Qe3 Bf3 12. Nd2 Bxh1 13. Bc4+ Kh8 14. Rxh1 $19 {Chapman-Hammett, John Bishop Minor 2016,1-0}) 6... g6 7. Qd5 (7. Qe2 {is an old analysis by Bronstein cited in Lein & Pickard 1995:88} d5 $1 (7... Qxd4 8. Nc3 (8. Bd2 $18 {Cloud Engines}) 8... Be6 9. Be3 Qg7 10. Nxe4 $16) 8. Ne5 Bd6 (8... Nd7 9. f4 $17 {0-3 in internet games}) 9. c4 Bxe5 ( 9... c5 10. cxd5 cxd4 11. Qb5+ (11. Nc4 $16) 11... Nd7 12. Nxd7 Bxd7 13. Qxb7 Rc8 (13... Rb8 $19) 14. Nd2 e3 $19 {Nierman-Elburg, Training Game corr 1999,0-1 }) 10. dxe5 Qxe5 {Bronstein, with no evaluation} 11. cxd5 Nf6 12. Nc3 $14 { Stockfish10}) (7. Qg5 $15 {Stockfish10}) (7. Qd1 $11 {Houdini6 & Stockfish10}) 7... Ne7 {hoping to win a piece?} (7... Qe6 8. Nc3 Nf6 9. Qxe6+ Bxe6 10. Bg5 Be7 {Bronstein seen as =; Stockfish10 evaluates as definite plus for Wh} (10... Bg7 11. O-O-O d5 12. Ne3 c6 13. Be2 Nbd7 14. f3 exf3 15. Bxf3 O-O-O $11 { Pecina-Kouba, Pardubice/Chrudim op 2001,1/2-1/2} (15... O-O $15 {Stockfish10})) ) (7... Qf5 8. Nc3 (8. Ne3 Nf6 9. Qxf5 gxf5 10. c3 d5 11. g3 Nc6 $14 {Cabanas Jimenez-Aziz Ortego, Madrid ch U20 1999,0-1}) 8... Nf6 9. Qb5+ Qxb5 10. Nxb5 Na6 11. Bf4 Nd5 12. Bd2 Bg7 13. Ne3 {Michalek-Melchor Munoz, Theme t corr , 1998,1/2-1/2}) (7... Bg7 8. Qxe4+ Ne7 9. Ne3 (9. d5 O-O 10. f3 Bf5 $19 { Brudnova-Tochor, CZE ch tm , 2003,0-1}) 9... Rf8 (9... O-O $15) 10. f3 $11 { Capone-Minerva, Cecchina 0pen - 1997,1-0}) 8. Qxe4 d5 (8... Nbc6 $1 9. Ne3 Qxd4 10. Nc3 Bg7 11. Bc4 Bd7 12. Bd2 O-O-O 13. Qxd4 Nxd4 14. O-O-O Rhf8 15. f3 c6 $11 {Stockfish10}) 9. Qe5 Qxe5+ (9... Bg7 10. Bg5 Qe6 11. Qxe6 Bxe6 12. Ne5 $14 {Stockfish10}) 10. Nxe5 Bg7 11. c3 (11. f4 Bf5 12. c3 Nbc6 13. Bb5 a6 14. Bxc6+ Nxc6 15. Nxc6 bxc6 16. O-O Rb8 (16... c5 17. Be3 O-O 18. dxc5 Rfe8 19. Bd4 Re2 $11 {Stockfish10- development of 3 pieces is usually worth a pawn, but it's 2 here?!}) 17. Nd2 Bh6 18. Nb3 $16 {Knyazkov-Winkler, Canarias en Real blitz, playchess.com 2004,1-0}) 11... O-O (11... c5 {Stockfish10- Bl needs some rapid deployment to compensate for the pawn} 12. Nf3 cxd4 13. cxd4 Nbc6 14. Be3 Bg4 15. Nbd2 O-O $14) 12. Be2 (12. Nd3 $16 {Stockfish10}) 12... Nd7 (12... c5) 13. f4 $16 Nxe5 14. dxe5 (14. fxe5 {may be stronger, as it lets the B out- the Wh R can always come to f1. It also avoids the Bl tactic in the next note}) 14... Bf5 (14... g5 {Stockfish10-is worth a try-breaking open the position while Wh is still behind in development} 15. fxg5 (15. g3 gxf4 16. Bxf4 Ng6 $15) 15... Ng6 16. Be3 (16. Rf1 Bd7 $14 (16... Re8)) 16... Nh4 17. Rg1 Bxe5 18. g3 Nf3+ 19. Bxf3 Rxf3 20. Ke2 Rf7 21. Na3 Bh3 $11 {Stockfish10}) 15. O-O (15. Nd2 $18 { as it aids e5}) 15... Rad8 (15... g5 16. fxg5 Rae8 $16 {Stockfish10- but Bl must try & prevent Wh from just consolidating his position with an extra preotected passed pawn}) 16. Be3 (16. Nd2) 16... b6 (16... g5 $5) 17. Nd2 c5 ( 17... g5 {Stockfish10 insists}) 18. Nf3 $18 h6 19. Rad1 Bg4 20. h3 Nf5 (20... Be6 $5) 21. Bf2 Bxf3 22. Bxf3 d4 23. cxd4 (23. Rfe1) 23... Nxd4 24. Bxd4 cxd4 25. Be4 Kh8 (25... g5 {last chance}) 26. Bxg6 d3 {Stockfish10 plays this for Bl as well- true, Bl gets a bit of play, but it is another pawn gone} 27. Bxd3 Rd4 28. g3 (28. Bg6) 28... Rfd8 29. Be2 Bf8 30. Rxd4 Bc5 31. Kg2 Rxd4 32. Rd1 Kg7 (32... Rb4 33. b3 {and it's the Wh pieces that threaten to become active , accompanied by a pawn surge.}) (32... Rxd1) 33. Rxd4 Bxd4 34. b3 (34. Kf3 { is faster according to Stockfish10- but there really is no need to rush in this kind of ending- Bl has no play at all}) 34... a5 35. Bc4 Bc5 36. Kf3 Kg6 37. Bd3+ (37. g4) 37... Kf7 38. Ke4 Kg6 39. g4 h5 40. Bb5 h4 41. Be8+ Kg7 42. Kf5 (42. f5 {lots of possibilities for Wh}) 42... Kf8 43. Bb5 Kg7 44. Ke6 Kf8 45. f5 Bd4 46. g5 a4 47. Bxa4 Bc5 48. f6 Be3 49. g6 Bh6 50. Kf5 Bg7 51. fxg7+ ( 51. e6 {forces mate 1 move quicker}) 51... Kg8 52. e6 b5 {perhaps Wh can be persuaded to allow a stalemate?} 53. e7 bxa4 54. e8=Q+ (54. Kf6 a3 55. e8=Q# { is one move quicker to fotce mate} (55. e8=R#)) 1-0 [Event "Friendly"] [Site "Microsoft"] [Date "2019.04.02"] [Round "?"] [White "Judge, Kieran"] [Black "Francis, Matthew"] [Result "1/2-1/2"] [ECO "B01"] [WhiteElo "1064"] [BlackElo "1712"] [Annotator "Matthew Francis"] [PlyCount "41"] [TimeControl "240+2"] {588MB, DFritz11.ctg, Matthew-study} 1. e4 d5 2. exd5 Nf6 3. d4 Bg4 4. Be2 { This variation is labelled The Wuss by David Smerdon in his book on the opening!} Bxe2 5. Nxe2 (5. Qxe2 {[%emt 0:00:00] is more common}) 5... Qxd5 6. O-O ({The pawn sacrifice} 6. Nbc3 {[%emt 0:00:00] has been played against me several times by Julie van Kemenade, a very unwusslike line in which she has beaten me every time}) 6... Nc6 7. Nbc3 Qd7 {proves to be a bad square for the queen, but I wanted pressure down the d-file} 8. Bg5 O-O-O 9. Nb5 a6 10. a4 $6 {A sacrifice that shouldn't work} Kb8 $2 (10... axb5 11. axb5 Nb8 $19) 11. c3 $1 axb5 $2 (11... Qd5 12. Bxf6 gxf6 13. Na3 $15) 12. axb5 Na7 13. Rxa7 $1 {I hadn't seen this} Kxa7 14. Qa4+ Kb8 (14... Kb6 {is even worse}) 15. Ra1 c5 $5 { The best defence, but it shouldn't be enough} 16. Bf4+ (16. dxc5 Qd5 17. c6 Kc7 18. c4 Qxg5 19. Qa5+ b6 20. Qa7+ Kd6 21. c7 Rc8 22. Qxb6+ Ke5 23. Qc5+ Nd5 24. f4+ {is one winning line given by Fritz}) 16... e5 17. Qa7+ (17. dxe5 Qe6 18. exf6+ Bd6 19. b6 Kc8 20. Qa8+ Kd7 21. Qxb7+ Ke8 22. fxg7 Rg8 23. Bxd6 Qxd6 24. Qe4+ Qe6 25. Qxh7 $18) 17... Kc8 18. Qa8+ Kc7 19. Qa5+ Kc8 20. Qa8+ Kc7 21. Qa5+ 1/2-1/2

Thursday, 21 March 2019

Back in Contention

After a couple of hiccups early in the season, Aberystwyth are getting back into contention for the Dyfed League title 1n 2019. On Monday 4 March at the Emlyn Cafe, Tanygroes, Aber were in imperious form against Steynton C, helped in places by some convenient errors from their opponents. Rudy van Kemenade was unfazed by Colin Denham' unusual (perhaps improvised?) variation of the Sicilian, which simply lost a pawn without compensation, after which White remained in firm control. Adam Watkin-Jones had reached a level position against Scott Hammett's Stonewall Attack when a miscalculation by White dropped a piece, with the game following soon after. James Cook's Ruy Lopez against Ray Greenwood was a fierce struggle; White won the exchange but Black had two powerful bishops and found some counterplay before being outplayed in the ending. Sam Holman went a pawn up in another Sicilian against Gwyn Evans, but the ending with opposite-coloured bishops should have been drawn till White dropped his bishop to a pawn fork. The result was 4-0 to Aber.

A couple of weeks later, Aber entertained league leaders Cardigan A at home. Rudy's unusual opening brought about a position that may have bemused Iolo Jones, since he soon lost a pawn in a complex game which I don't even begin to understand. At any rate Black retained the advantage and went on to win the ending. Adam, bizarrely, was the beneficiary of a very similar error to the one which had won him a piece and the game against Scott Hammett in the previous match, and Tony Haigh resigned at once. After a quiet Queen's Pawn Game opening, Julie van Kemenade found a kingside attack against Ben Brewer, but White's position didn't seem to have any weaknesses, and his sudden counter-attack was devastating. I built up a strong central position against Awne Osinga's Modern Steinitz Defence to the Ruy Lopez, and broke through with my e-pawn to win a piece. After that I had some problems with a blocked-in bishop but was able to sacrifice it back to reach a winning position. Aber's 3-1 win avenged their defeat earlier in the season, and keeps them close behind Cardigan A in the League.

[Event "Dyfed League:SteyntonC-Aberystwyth"] [Site "?"] [Date "2019.03.04"] [Round "?"] [White "Van Kemenade, R."] [Black "Denham, C."] [Result "1-0"] [ECO "B27"] [WhiteElo "2021"] [BlackElo "1630"] [PlyCount "65"] [EventDate "2019.??.??"] {[%evp 0,7,18,13,45,45,82,87,141,138]} 1. e4 c5 2. Nf3 g6 3. d4 b6 {50 odd games with this} (3... cxd4) (3... Bg7 {main lines}) 4. dxc5 (4. Nc3 {scores even better, though it may just transpose to the text}) 4... bxc5 5. Qd5 (5. Bc4 $18 {Stockfish10 prefers to not take the pawn} e6 6. Nc3 Ba6 7. Bxa6 Nxa6 8. e5 {Yardim-Kavrut, Tukish Cup, Antalya 2017,1-0}) 5... Nc6 6. Qxc5 (6. Ne5 { Stockfish10} e6 7. Nxc6 Qb6 8. Qe5 f6 9. Qg3 Qxc6 10. Nc3 Bd6 11. Bf4 e5 12. Be3 $18 {Nguyen-Thao,Nam THCS Dong Thap 2000,1-0}) 6... Bg7 (6... Bb7 7. Nc3 e6 8. Qb5 Qc8 9. Bd2 Ba6 10. Qxa6 Qxa6 11. Bxa6 Nb4 12. Bd3 {Stoelzel-Janocha, DESC email 2006,1-0}) (6... Qa5+ 7. Qxa5 Nxa5 8. Bd2 Nc6 9. Bc3 Nf6 10. Bc4 Bg7 11. Nbd2 {Llaneza Vega-Alvarez, Asturias ch U12 ,1998,1-0}) 7. Nc3 {Stockfish10 } (7. c3 {main, 6-1}) (7. Bd3 Qc7 8. Nc3 d6 9. Nd5 Qb7 10. Ba6 (10. Qe3 $16) 10... dxc5 (10... Qxa6 $19) 11. Bxb7 Bxb7 12. Nc7+ Kd7 13. Nxa8 Bxa8 $17 { Huyet-Brugge, La Fere op 2012,0-1}) 7... Bb7 8. Bd2 (8. Bc4 {Stockfish10- considered} Rc8 (8... Bxc3+ 9. bxc3 Qa5 10. Qxa5 Nxa5 11. Bd3 $16 {Wh thought Bl might have some play on the c file}) 9. Qe3 Qb6 10. O-O Qxe3 11. Bxe3 Nf6 12. Rfd1 d6 13. h3 O-O 14. Bb3 Na5 15. Nd2 $16) 8... Rc8 (8... d6 9. Qe3 e6 10. Bb5 Nge7 11. O-O O-O 12. a3 Qc8 13. Rfe1 a6 14. Bd3 Ne5 15. Nxe5 Bxe5 16. Rab1 Nc6 $18 {Wegner-Krolak, POL ch tm IV liga szachowa 2011,0-1 - Wh blundered a R on move 42 in a winning position}) 9. Qe3 (9. Bd3 {considered- eventual Stockfish10 first choice} Nf6 (9... Ne5 10. Qxa7 Nxf3+ 11. gxf3 Bc6 12. O-O $18 {considered}) 10. O-O O-O 11. h3 $16) (9. Qb5 Rb8 10. Bd3 Ba8 11. Qa4 Rxb2 12. O-O $16 {Stockfish10, but there is no need to return the pawn yet}) 9... Nb4 ( 9... Bh6 10. Qe2 $16 {considered}) (9... Nf6 10. h3 {Wh must be careful as Bl can easily get play in return for the pawn} (10. Bc4) (10. Bd3) 10... d5 11. exd5 Nxd5 12. Nxd5 Qxd5 13. Qb3 Qe4+ (13... Qxb3 14. axb3 Bxb2 15. Ra4 Bg7 16. b4 O-O 17. b5 Ne5 18. Nxe5 Bxe5 19. Rxa7 Rfd8 20. Rxb7 Rxc2 21. Rxe7 Bf6 22. Bb4 Rc1+ 23. Ke2 Rc4 24. Ba5 Bxe7 25. Bxd8 Bxd8 26. Kd2 Ba5+ 27. Kd3 Rb4 28. Kc2 $11 {Stockfish10}) 14. Kd1 Nd8 15. Bd3 Qe6 16. Bb5+ Kf8 17. Qxe6 Nxe6 18. c3 Nc5 $14 {Stockfish10}) 10. Bd3 (10. Rc1 Qb6 11. Qxb6 axb6 12. Bb5 $16 { Stockfish10}) 10... Ba6 11. Rc1 {safest} (11. a3 {considered} Nxd3+ (11... Bxd3 12. axb4 Bxc2 13. Nd4 {Stockfish10, missed} Bxd4 14. Qxd4 Nf6 15. Rxa7 $18) 12. cxd3 Qb6 13. Qxb6 axb6 14. Ke2 $16) (11. O-O Bxd3 12. cxd3 Nc2 13. Qxa7 Nxa1 14. Rxa1 $16 {considered}) (11. Qe2 $2 Nxc2+ {seen} 12. Kf1 Bxd3 13. Qxd3 Nxa1 $19) 11... Bh6 12. Qd4 Bxd2+ {Bl should play the moves in a different order} ( 12... Nxd3+ 13. cxd3 Bxd2+ 14. Nxd2) 13. Nxd2 {after consideration of the best way to take back!} (13. Kxd2 {wins material as} Nxd3 14. Qxh8 Nxc1 $2 15. Qxg8# ) 13... Nxd3+ 14. cxd3 f6 (14... Nf6 15. e5 Nh5 16. O-O O-O 17. Nc4 $18 { Stockfish10}) 15. O-O Qb6 {after the d pawn , but Bl is way behind in development} (15... Kf7 16. b4 e5 17. Qd5+ Kg7 18. b5 Ne7 19. Qd6 Bb7 20. Na4 $18 {Stockfish10}) 16. Qxb6 axb6 17. Nd5 Rxc1 (17... Kf7 18. Rxc8 Bxc8 19. Rc1 Nh6 20. Rc7 Rd8 21. a4 Ba6 22. d4 Rb8 23. Rxd7 $18 {Stockfish10}) 18. Rxc1 Bxd3 19. Rc8+ Kf7 20. Nxb6 $18 Ba6 21. Ra8 Bb7 22. Rb8 (22. Ra7 {wins another pawn, but lets Bl R out}) 22... Bc6 23. a4 h5 24. b4 d6 25. b5 (25. a5 Bb5 26. Nd5 Bd3 27. b5 {transposes to something like the game}) 25... Be8 26. Nd5 (26. Rxe8 Kxe8 27. a5 Kf7 (27... Kd8 28. a6 Kc7 29. Ndc4 e6 30. a7 Ne7 31. a8=Q Rxa8 32. Nxa8+ Kb7 33. Nab6 $18 (33. Nxd6+ Kxa8 34. Ne8 f5 35. e5 Kb7 36. Ng7 Kb6 37. Nxe6 Kxb5 38. f4 $18)) 28. a6 Nh6 29. a7 $18 {considered}) 26... f5 27. a5 (27. b6 Bxa4 {considered & pm analysis} 28. Nb4 $18 {Stockfish10} (28. b7 Bc6 29. Rf8+ Kxf8 30. b8=Q+ $18)) 27... fxe4 (27... Bxb5 {at once}) 28. Nxe4 (28. a6) ( 28. b6) (28. Nc7) 28... Bd7 (28... Bxb5 {at once}) 29. a6 Bxb5 30. Ng5+ (30. a7 Bc6 31. Ng5+ Kg7 32. Nb4) 30... Kg7 31. Ne6+ Kf7 (31... Kh7 32. Nf8+ (32. a7 Bc6 33. Nb4 Be4 34. Ng5+ Kg7 35. Nxe4) 32... Kh6 33. Rxb5 Nf6 34. a7 (34. Rb8 Nxd5 35. a7 Nc7 36. Ne6) 34... Rxf8 35. Rb8 $18) 32. Nd8+ {interupting the Bl R stopping the pawn} (32. Ndc7 Kf6 33. Rxb5 Nh6 34. a7 {Stockfish10}) 32... Kg7 (32... Ke8 33. a7 (33. Nc7+ Kd7 34. Nxb5)) 33. a7 {for the moment material is still level.} 1-0 [Event "Dyfed League:SteyntonC-Aberystwyth"] [Site "?"] [Date "2019.03.04"] [Round "?"] [White "Hammett, S."] [Black "Watkin-Jones, A."] [Result "0-1"] [ECO "A45"] [WhiteElo "1533"] [BlackElo "1928"] [Annotator "kemen"] [PlyCount "78"] [EventDate "2019.??.??"] {[%evp 0,12,37,-30,-3,-24,17,-15,-6,-1,-20,-28,-41,-50,-17]} 1. f4 g6 2. Nf3 Bg7 3. e3 d6 4. d4 Nf6 5. c3 (5. Bd3 O-O 6. O-O {main}) 5... O-O 6. Bd3 Nbd7 { main} (6... c5) (6... Nc6 7. O-O e5 8. Nbd2 Qe7 9. Bc2 e4 (9... exf4 10. exf4 Qe3+ 11. Kh1 Qxf4 {Waquet-Schmidt, La Fere vop 2009,0-1} 12. Ne4 $11 {Komodo12} ) 10. Ng5 Bf5 11. Qe1 h6 12. Nh3 Bxh3 13. gxh3 Qe6 {Boot-Van Kemenade R, Wakefield-Undercliffe 1991,0-1}) 7. O-O Re8 {65% for Bl} (7... e5 {main ,72% for Bl}) (7... c5 {61% for Bl}) (7... h6 {waiting move- Rudy, not yet been played}) 8. Nbd2 (8. e4 e5 {main,53% for Bl}) 8... e5 9. Ng5 (9. fxe5 dxe5 10. Bc4 $11 {50 % 4 games}) (9. Qc2 $11 {though 72% for Wh- its not always the opening that causes results!}) 9... Qe7 {overcautious about sacrifices on f7?} (9... h6 $2 {no} 10. Nxf7 $18 (10. Nge4 Nxe4 11. Bxe4 Nf6 12. Qc2 Nxe4 13. Nxe4 Bf5 (13... exd4 $19) 14. g4 Bxg4 15. Qg2 Qd7 $19 {Antusch-Costescu, Wld ch Seniors (women) Bad Wildblad 1993,0-1}) 10... Kxf7 11. Qb3+ Ke7 (11... Re6) 12. fxe5 (12. Bxg6) 12... dxe5 13. Ne4 (13. Bxg6 Rf8 14. Rf5 $18) 13... Rf8 $11 { Brito-Meirelles, Goiania Kasparov op 2011,0-1}) (9... exd4 {Komodo12 & Stockfish10} 10. exd4 (10. cxd4 $11 {Komodo12}) 10... c5 (10... Nb6 $11) 11. Ndf3 h6 12. f5 c4 13. Bxc4 (13. fxg6 hxg5 14. gxf7+ Kxf7 15. Bxc4+ d5 16. Nxg5+ Kg8 17. Bd3 $16 {Komodo12}) 13... d5 14. Bb5 a6 (14... hxg5 $15) 15. Bxd7 Bxd7 16. fxg6 fxg6 17. Ne5 Bf5 (17... hxg5 18. Bxg5 Bf5 $17) 18. Ngf7 $16 { Schmidt-Ellis, IECG 1996,1-0}) 10. Nde4 (10. fxe5 dxe5 11. e4 (11. Bc4 Rf8 12. Qf3 Nb6 13. Bb3 (13. Bxf7+ Rxf7 14. Nxf7 Kxf7 (14... exd4 15. exd4 (15. Ng5 Bg4 16. Qg3 dxe3 $17) 15... Qxf7 16. Ne4 Nbd5 17. Bg5 Bf5 $11) 15. Ne4 Nbd7 16. Nxf6 Nxf6 17. e4 Bd7 18. Bg5 Rf8 19. Qg3 Ke8 20. Rae1 $11 {Komodo12}) 13... Bg4 14. Qg3 exd4 15. exd4 Bf5 $11) 11... h6 12. Ngf3 exd4 13. cxd4 c5 $15 {Komodo12 }) 10... exd4 (10... h6 11. dxe5 dxe5 12. Bc4 (12. Nxf6+ Nxf6 13. fxe5 Qxe5 14. Nf3 Qe7 15. e4 Qc5+ 16. Nd4 Nxe4 $17 {Komodo12}) 12... hxg5 13. Nxf6+ Nxf6 14. fxg5 Bf5 15. gxf6 Bxf6 16. Qb3 e4 17. Qxb7 Rad8 18. Qxa7 Be5 $15 {Komodo12} ( 18... Kg7 $15)) (10... d5 {Rudy} 11. Nxf6+ Bxf6 12. Nh3 (12. Nxh7 Kxh7 13. fxe5 Nxe5 14. dxe5 Bxe5 $17) 12... e4 13. Be2 Bg7 $15 {Komodo12}) 11. Nxf6+ Nxf6 12. exd4 h6 (12... c5 13. Bd2 Qc7 14. f5 c4 15. Bc2 h6 (15... Bxf5 16. Bxf5 gxf5 17. Rxf5 h6 18. Nh3 Qd7 $11 {Komodo12}) 16. fxg6 hxg5 17. Bxg5 Bg4 18. Qd2 Re6 19. Qf4 fxg6 20. Bxf6 Be2 21. Bxg7 Bxf1 22. Rxf1 Qxg7 23. Be4 Rf8 24. Bd5 Rxf4 25. Bxe6+ Kh8 26. Rxf4 Qe7 27. d5 $11 {Komodo121}) 13. Nf3 Bg4 (13... Bd7 14. f5 g5 $11 {Komodo12} 15. h4 g4 16. Nh2 h5 17. Bg5 d5 18. Qd2 Qd6 19. Qf4 Qxf4 20. Bxf4 c5 21. dxc5 Ne4 22. Bxe4 Rxe4 23. Rad1 Bb5 24. Rf2 Bf8 25. Rxd5 Bc6 26. Rd6 Bxd6 27. cxd6 Re1+ 28. Nf1 Bb5 $15 {Komodo121}) 14. Bd2 (14. f5 g5 15. h3 Bxf3 16. Qxf3 c6 (16... d5 17. h4 $14) 17. h4 gxh4 (17... g4 18. Qg3 d5 19. Bf4 Nh5 20. Qxg4 Nxf4 21. Rxf4 h5 22. Qxh5 Qe3+ 23. Rf2 Qxd3 24. f6 Bf8 25. Rf5 Qe3+ 26. Kh1 Qh6 27. Qg4+ Bg7 28. Qxg7+ Qxg7 29. fxg7 Re4 30. g3 Kxg7 31. Raf1 $16) 18. Qh3 Ne4 19. Bxe4 Qxe4 20. f6 Bf8 21. Bd2 Qg6 22. Rf4 Re4 23. Rxe4 Qxe4 24. Re1 Qg6 25. Qxh4 $16 {Komodo12}) 14... d5 (14... Ne4 15. Re1 d5 $17 { Komodo12}) 15. Qc2 (15. f5 Ne4 16. fxg6 fxg6 17. Qc1 g5 18. Qc2 Nxd2 19. Nxd2 Rf8 $11 {Komodo12}) 15... Bxf3 (15... Ne4 16. Ne5 Bf5 17. g4 Nxd2 18. Qxd2 Bxd3 19. Qxd3 c5 $11 {Komodo12}) 16. Rae1 $2 {a zwischenzug} (16. gxf3 {Komodo12} Qd6 17. Rae1 a6 18. f5 g5 19. Kh1 Nh5 $11) (16. Rxf3 Qd6 17. f5 g5 18. Re1 Rxe1+ 19. Bxe1 Re8 20. Bg3 Qb6 21. Qb3 Qxb3 22. axb3 c6 $11 {Komodo12}) 16... Be4 $19 {foiled by another one} 17. Bxe4 Nxe4 18. f5 Qd7 (18... g5) 19. fxg6 fxg6 20. Bc1 Rf8 (20... Re6) 21. Rxf8+ Rxf8 22. Rf1 Rxf1+ 23. Kxf1 Qf5+ (23... Qc6 24. Qe2 Bxd4 25. Bxh6 Bb6 26. Bf4 Qf6 $19 {Komodo12}) 24. Kg1 Nd6 (24... h5 ) 25. Qe2 Qe4 26. Qf2 Nf5 (26... Qb1 27. Qf1 Qxa2 {Komodo12}) 27. g3 Nxd4 $1 28. Be3 Nf5 (28... Nf3+ 29. Kf1 (29. Kg2 Ne5+ 30. Kg1 Ng4 $19) 29... Qb1+ ( 29... Nxh2+ 30. Qxh2 Qxe3 $19) 30. Kg2 (30. Ke2 Ne5 31. Bd2 Qxb2) 30... Ne1+ 31. Kg1 Nc2+ (31... Nd3+ {most humans would opt for this one} 32. Qf1 Qxf1+ 33. Kxf1 Nxb2) 32. Kg2 Nxe3+ 33. Qxe3 Qxb2+ 34. Kg1 Qxa2 $19 {Komodo12}) 29. Bxa7 d4 (29... b6 30. Bb8 Ne3 (30... Be5) (30... d4 31. Bxc7 Qb1+ 32. Qf1 (32. Kg2 Ne3+ 33. Kh3 Qd1 34. Qf4 Qh5+ 35. Qh4 Qf5+ 36. g4 Qf1+ 37. Kg3 Qg2+ 38. Kf4 Nd5# {Komodo12}))) 30. cxd4 Bxd4 (30... b6 31. Kf1 Bxd4 {mating, Komodo12}) 31. Bxd4 Qxd4 32. a4 Qxf2+ 33. Kxf2 Kf7 34. Kf3 Ke6 35. Ke4 h5 36. b4 g5 37. a5 c6 38. Kd3 Kd5 39. Kc3 Nxg3 0-1 [Event "Dyfed League:SteyntonC-Aberystwyth"] [Site "?"] [Date "2019.03.04"] [Round "?"] [White "Cook, James"] [Black "Greenwood, Ray"] [Result "1-0"] [ECO "C62"] [WhiteElo "1496"] [BlackElo "1284"] [Annotator "kemen"] [PlyCount "103"] [EventDate "2019.??.??"] {[%evp 0,103,19,31,34,19,13,4,62,48,50,51,51,32,38,37,20,43,28,28,39,16,80,78, 110,120,127,96,119,104,107,71,61,82,82,95,241,241,265,145,124,72,81,82,98,80, 80,82,80,85,120,108,158,129,158,59,55,-39,99,113,118,107,112,97,95,79,128,124, 131,162,129,90,96,101,104,104,211,211,215,216,254,250,262,264,265,265,265,246, 420,376,456,486,902,876,962,992,1002,952,992,992,1271,1349,1591,1924,2520,2296] } 1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 exd4 5. Nxd4 Bd7 6. Nxc6 (6. Nc3) (6. O-O {main lines}) (6. Bxc6 bxc6 7. Nc3 {is a line that goes for opposite sides castling}) 6... bxc6 7. Bc4 Nf6 8. Nc3 Be7 9. O-O Rb8 (9... O-O 10. Re1 Be6 11. Bxe6 fxe6 12. e5 Nd5 13. Nxd5 cxd5 14. Qg4 Rf5 15. Bh6 Bg5 16. Bxg5 Qxg5 17. Qxg5 Rxg5 18. exd6 e5 19. dxc7 Rc8 20. f4 $1 $16 {Cook-Wade, Dyfed League: HaverfordwestB-Aberystwyth B,2014,1-0}) 10. Bb3 (10. b3 {2-0 in IECG internet games}) 10... Bg4 11. f3 Bh5 (11... Be6) 12. Be3 $17 a5 13. Ba4 Qd7 (13... O-O) 14. Rb1 (14. Nd5 $18 {Komodo12} O-O (14... Bg6 15. Ba7 Rxb2 16. Nxe7 Kxe7 17. Bb3 c5 18. e5 dxe5 19. Bxc5+ Kd8 20. Qe2 Qc6 21. Qxe5 $18) (14... Bd8 15. Qd2 O-O 16. Nf4 Rb4 17. b3 Bg6 18. Nd3 Rb8 19. Qxa5 $18) 15. Bxc6 $18 {Komodo12}) 14... O-O 15. Nd5 Nxd5 16. exd5 Qf5 17. Bxc6 $16 Bf6 (17... Bg6) 18. g4 $18 Qe5 19. Re1 (19. Ba7 {Rudy- Komodo12, maybe slighly more accurate, as after} Bg6 20. f4 Qe4 21. f5 $18) 19... Bg6 20. Ba7 (20. f4 {is still a possibility} Qe4 21. f5 Bc3 22. fxg6 fxg6 23. Bd7 Bxe1 24. Qxe1 Rf3 25. Be6+ $18 {Komodo12}) 20... Qf4 21. Bxb8 Rxb8 22. Qe2 {threatens the back rank} h5 23. gxh5 {best} Bxh5 24. Rf1 (24. Qe4 Bd4+ 25. Kg2 Qd2+ 26. Re2 Qg5+ 27. Kh1 f5 28. Qd3 Qf4 29. Rf1 Rxb2 $11 {Komodo12}) 24... Qg5+ 25. Qg2 (25. Kh1 Rb4 26. c4 Bg6 27. Rg1 Qh5 28. Rxg6 Qxg6 29. Rg1 Qf5 30. b3 $14 {Komodo12}) 25... Bd4+ 26. Kh1 Qf4 27. c3 (27. b3 $5) 27... Bxc3 $1 28. Bd7 (28. Qg3 Qe3 29. b3 Rb4 30. Rbc1 Rd4 $11 { Komodo12}) (28. bxc3 $2 Rxb1 29. Rxb1 Bxf3 $19) (28. b3 Rb4 29. Rbd1 Qf5 30. Rc1 Be5 31. Rc4 Rxc4 32. bxc4 Qd3 33. Bb5 Bc3 34. a4 $14 {the Bl Bs control a lot of squares}) 28... Rxb2 (28... Bg6 29. Rbd1 Rxb2 30. Rf2 Rb4 $15 {Komodo12} ) 29. Rxb2 Bxb2 30. Bg4 $16 (30. Qxb2 Bxf3+ 31. Rxf3 (31. Kg1 Qg5+ 32. Kf2 Qg2+ 33. Ke3 Qxb2 $19) 31... Qxf3+ 32. Kg1 Qe3+ {probably a perpetual} (32... Qxd5)) 30... Bxg4 31. fxg4 (31. Qxg4 Qe5 32. Qe4 Qf6 33. Qc4 g6 34. Qxc7 Be5 35. Qc4 $16 {Komodo12}) 31... Qe5 (31... Qc4 32. Rb1 Be5 33. g5 g6 34. Rf1 $16 { Komodo12}) 32. Rb1 (32. Qf3 Qe7 33. Rb1 Bf6 34. Rb8+ Kh7 35. Kg2 g6 36. Qh3+ Bh4 37. Qc3 Bf6 38. Qd3 Kg7 39. Rb7 $16 {Komodo12- Wh will win the c7 pawn, but then needs to arrange a Q swap to have any winning chances}) 32... Bc3 ( 32... Bd4 33. Qf3 Bb6 34. Rf1 Qe7 $16 {Komodo12, but not clear where there is a to be a Wh breakthrough}) 33. Rb8+ Kh7 34. Qh3+ Kg6 35. Qh5+ (35. Qd3+ $1 { it looks asif Wh needs to mop up a few pawns first befote going just the exchange up} Kf6 (35... Kg5 36. Re8 $1 Qf4 37. h4+ Kxh4 38. Rh8+ Kxg4 39. Qh3+ Kg5 40. Qxc3 $18) 36. Rc8 g6 37. Rxc7 Qe1+ 38. Kg2 Be5 39. Qf3+ Kg5 40. Rxf7 Qd2+ 41. Qf2 Qd3 42. Rf3 Qc4 43. Qe3+ Kxg4 44. Qd3 Qxd3 45. Rxd3 $18 {Komodo12} ) 35... Qxh5 36. gxh5+ Kxh5 37. Rb7 g5 (37... f5 38. Rxc7 Be5 39. Kg2 g5 { Komodo12- and it will be very difficult for Wh to find a weak spot in the Bl position- one pawn & a B for the exchange often leads to a draw if the defender has a passed pawn, preferably an outside one.} (39... Kg4 40. Rc4+ Kg5 41. h3 g6 $16)) 38. Rxc7 Bb4 39. Rxf7 $18 {now Wh can gang up with K & R on any isolated pawn he chooses} Kg4 40. Kg2 Bc3 41. h3+ Kh5 42. Kf3 Kg6 43. Re7 ( 43. Rd7 Bb4 44. Kg4 Kf6 45. Rd8 $18) 43... Be5 44. Ke4 (44. Kg4 Bf4 45. Re6+ Kg7 46. h4 {Rudy}) (44. Rxe5 $1 dxe5 45. Ke4 Kf6 46. a4 Ke7 47. Kxe5 $18 { Komodo12}) 44... Kf6 (44... Bf4 {Komodo12-lasts a little longer- Wh needs to backtrack a little} 45. Re6+ Kh5 46. Kf3 Bh2 47. Re8 Bf4 48. Rh8+ Kg6 49. Kg4 Bd2 50. Re8 Kf7 51. Re6 Bf4 52. h4) 45. Re6+ Kf7 46. Rxe5 (46. Kf5 Bf4 47. h4 $18 {is an alternative}) 46... dxe5 47. Kxe5 Ke7 48. d6+ (48. a4 Kd7 49. Kf5 Kd6 50. Kxg5 Kxd5 51. h4 Ke6 52. Kg6 Ke7 53. Kg7 {quickest- Komodo12}) 48... Kd7 49. Kd5 (49. a4 {Rudy & Komodo12 comes to the conclusion that this is quickest line}) 49... Kc8 50. Kc6 (50. Ke6 Kd8 51. d7 a4 52. a3) 50... a4 51. d7+ Kd8 52. a3 1-0 [Event "Dyfed League:SteyntonC-Aberystwyth"] [Site "?"] [Date "2019.03.04"] [Round "?"] [White "Evans, Gwyn"] [Black "Holman, Sam"] [Result "0-1"] [ECO "B28"] [WhiteElo "1300"] [BlackElo "1370"] [Annotator "kemen"] [PlyCount "106"] [EventDate "2019.??.??"] 1. e4 c5 2. Nf3 d6 3. g3 (3. d4 {main}) 3... a6 4. Bg2 Nc6 5. a3 $146 (5. O-O) (5. d3) (5. Nc3) 5... Bg4 (5... g6 {Stockfish10}) 6. d3 h6 (6... e6) 7. b3 { both sides work towards an unusaul position} Nf6 8. Bb2 e6 9. Nbd2 Be7 (9... d5 {Bl can afford to advance in the centre}) 10. O-O e5 (10... O-O) 11. Qe1 (11. Nc4 O-O 12. Ne3 Bh5 13. Qd2 Nd4 14. Nxd4 cxd4 15. Nf5 Bg6 16. Nxe7+ Qxe7 17. c3 dxc3 18. Bxc3 Rac8 $14 {Stockfish10}) 11... Qd7 (11... b5 $11 {Stockfish10}) 12. Nh4 (12. Nc4 Rd8 13. Ne3 Bh3 14. Nh4 Bxg2 15. Kxg2 d5 $11 {Stockfish10}) 12... O-O (12... Nd4 13. Qb1 O-O 14. c3 Nc6 15. Nc4 Rad8 16. Ne3 Be6 17. c4 g6 $11 {Komodo12}) 13. Nf5 {this is often a good sacrifice to make use of the e4 square & open up lines for the wh B, but Bl is too well developed here for it to have that much impact} (13. Nc4 Nh5 14. Nf3 Rae8 15. Nb6 Qd8 16. Nd5 Nf6 17. Ne3 Be6 $11 {chances for both sides}) 13... Bxf5 14. exf5 Qxf5 (14... Rfe8 $17) 15. Ne4 (15. f4 $1 {is the usual way to exploit the position of the Q} Qd7 16. Nc4 Rae8 17. fxe5 dxe5 18. Nxe5 Nxe5 19. Qxe5 c4 20. bxc4 Bxa3 21. Qc3 Bxb2 22. Qxb2 Re7 $11 {Stockfish10}) 15... Nd4 (15... Rab8 $1 16. Rb1 Nd4 $15 { Stockfish10}) 16. Nxf6+ Bxf6 17. Bxd4 cxd4 18. Bxb7 Ra7 19. Bd5 $11 Rc8 20. Ra2 {buries a R for the moment} (20. Qe2) (20. Bc4 {both more flexible}) 20... Rc3 21. Qe4 (21. Qe2) 21... Qxe4 22. Bxe4 {diverts the B from where it needs to be. } (22. dxe4 $11) 22... Rac7 (22... Bd8 {Stockfish10}) 23. Bd5 (23. Rb1 Rxc2 24. Rxc2 Rxc2 25. b4 $11 {Stockfish10}) 23... Rxc2 24. Rxc2 Rxc2 25. Bc4 (25. b4 $11 {Stockfish10}) 25... a5 $15 26. b4 (26. a4 {may be better- to stabilize the Q side}) (26. Kg2 Kf8 27. Kf3 Ra2 28. b4 Rxa3 29. Rb1 axb4 30. Rxb4 d5 31. Rb3 Ra5 32. Rb5 Rxb5 33. Bxb5 Ke7 34. Bc6 Kd6 35. Bb7 $15 Be7 36. g4 g6 37. Bc8 Kc7 38. Ba6 f5 39. gxf5 gxf5 40. Ke2 e4 41. Bb5 Bh4 42. f3 Kd6 43. h3 Bd8 44. Be8 Be7 45. Bg6 Ke5 46. Bf7 Bd8 47. Bg8 {and Bl will be unable to make further progress- Stockfish10 nudged}) 26... axb4 27. axb4 Rb2 (27... e4 $1 { Stockfish10} 28. Kg2 (28. b5 Bd8 29. Ra1 e3 30. fxe3 dxe3 31. Ra8 Rc1+ 32. Kg2 e2 33. Rxd8+ Kh7 34. Re8 e1=Q 35. Rxe1 Rxe1 36. Bxf7 Rb1 37. Bc4 Kg6 38. Kf3 Kf5 39. Ke3 Ke5 40. d4+ Kf6 41. Kd3 Ke7 42. Ke4 Kd7 43. Kd5 Rb2 44. h3 g5 45. Bd3 Rb3 46. Bf5+ Kc7 $19) 28... e3 29. Bd5 Bd8 30. Kf3 (30. Kh3) 30... Bb6 $19 {because the Bl R is the more active, so transfers some of its pwers to the companion B}) 28. b5 (28. Ra1 {Rs need activity} Rxb4 (28... e4 29. dxe4 Rxb4 30. Ra8+ Kh7 31. Rc8 (31. Bxf7 d3 $17) 31... g5 32. Rc7 Be5 33. Rxf7+ Kg6 34. Rc7 $11) 29. Ra8+ (29. Ra7) 29... Kh7 30. Bxf7 e4 31. h4 h5 32. Ra2 $11 { Stockfish10}) 28... d5 29. Bxd5 Rxb5 30. Be4 (30. Bc4 {better to keep the B trained on the f7 pawn} Rb7 31. Ra1 g6 32. Kg2 {and its doubtful eithe r side can win}) 30... g6 31. f4 (31. Rc1 $11 {activity}) 31... Kg7 (31... exf4 32. Rxf4 Bg5 33. Rf1 f5 34. Bf3 Be3+ 35. Kh1 Kg7 $17 {Stockfish10, but still not quite enough to force a win}) 32. Kg2 (32. f5 $11 {Sam- the B now has a firm base on e4-Stockfish10}) 32... exf4 33. Rxf4 Bg5 34. Rf1 Ra5 (34... f5 35. Bc6 Rb2+ 36. Kh1 (36. Rf2 Rb3 $19 {as the d p awn goes- in both senses, Wh & Bl})) 35. g4 (35. h4 Be3 36. g4) 35... Be3 36. h3 Rg5 {not usually a good idea to have Rs too close to the K they are attacking, as they can return the compliment} (36... h5 37. Kg3 f6 {and Wh is running out of moves}) 37. Kg3 h5 38. Kh4 Bd2 (38... f6) 39. Rf2 {initially Bl thought this was a losing move} Be1 40. Kxg5 Bxf2 41. gxh5 $11 f6+ 42. Kg4 $2 {but this is it} (42. Kf4 Be3+ 43. Kg3 gxh5 44. Bf5 $11 {one pawn up is just enough in an opposite colour B ending, especially with pawns all on the same side.}) 42... f5+ $19 43. Bxf5 ( 43. Kf3 fxe4+ 44. Kxf2 e3+ {and the protected passed pawn decides} 45. Kg2 g5 ( 45... gxh5)) 43... gxf5+ 44. Kxf5 Kh6 45. Kg4 Be1 46. Kf4 Kxh5 47. Ke4 Bc3 ( 47... Bf2 {also}) 48. Kd5 Kh4 49. Ke4 Kxh3 50. Kf3 Bb2 51. Ke2 Kg3 52. Kd2 Kf2 53. Kc2 Ke2 0-1 [Event "Dyfed League:Aberystwyth-CardiganA"] [Site "online arena"] [Date "2019.03.19"] [Round "?"] [White "Jones, IC."] [Black "Van Kemenade, R."] [Result "0-1"] [ECO "B12"] [WhiteElo "2238"] [BlackElo "2021"] [Annotator "kemen"] [PlyCount "126"] [EventDate "2019.??.??"] 1. Nf3 d6 2. d4 c6 3. e4 Nd7 4. Nc3 h6 (4... e5 {main}) 5. a4 $146 (5. Bc4) (5. Bd3 {main}) 5... Qa5 (5... e5 {returns to a Philidor}) (5... g5 $5) 6. Bd2 g5 { pursuing ideas from the Elshad System, designed to get Wh players out of their comfort zone. An evetual g4 will undermine the Wh centre} (6... e5 {looks safer }) (6... Qc7 7. Be3 e5 {same principle}) 7. Nd5 (7. h3 {Stockfish10}) 7... Qd8 8. Ne3 e6 (8... Ngf6 9. Bd3 e5 10. Bc3 g4 11. Nxe5 dxe5 12. dxe5 Nxe5 13. Bxe5 Qa5+ 14. Bc3 Bb4 15. O-O Bxc3 16. Nc4 Qc5 17. bxc3 Be6 18. e5 Bxc4 19. Bxc4 Qxc4 20. exf6 O-O 21. Qd2 Kh7 22. Qd7 Qxc3 23. Qf5+ Kh8 24. Rad1 $16 { Stockfish10}) (8... Ndf6 {considered in pm analysis} 9. Bd3 e6 10. e5 Nd5 11. Nc4 Nf4 12. Bxf4 gxf4 13. exd6 Bxd6 14. Nxd6+ Qxd6 15. O-O Nf6 16. Re1 Bd7 17. Qd2 O-O-O 18. Re5 Nd5 19. c4 f6 20. Re4 Nc7 21. Rxf4 $18 {Stockfish10}) 9. Bc3 Bg7 (9... d5 {pm analysis} 10. exd5 cxd5 11. h4 gxh4 12. Rxh4 Ne7 13. Bd3 Nc6 14. Kf1 Nf6 15. Ne5 Bd7 16. Qf3 Nxe5 17. dxe5 Ne4 18. Rf4 Qg5 19. Rg4 Qe7 20. Nc4 h5 21. Rxe4 dxe4 22. Bxe4 Qc5 23. Na5 Rg8 24. Nxb7 Qc4+ 25. Kg1 Rc8 26. Re1 $18 {Stockfish10}) 10. Nc4 Ndf6 (10... Nb6 11. Ne3 Ne7 (11... a5) 12. h4 $16 { Stockfish10}) 11. e5 (11. Nxd6+ Qxd6 12. e5 Qc7 13. exf6 Nxf6 $11 {Stockfish10} ) 11... dxe5 12. dxe5 (12. Nfxe5 Ne7 13. h4 gxh4 14. Rxh4 Nf5 15. Rh3 Nd5 16. Qf3 Rf8 17. O-O-O Qe7 18. g4 Nd6 (18... Nxc3 19. bxc3 Nd6 20. Nxc6 $18) 19. Nxd6+ Qxd6 20. Bd2 Bd7 21. Qb3 Bc8 (21... O-O-O 22. c4 Bxe5 23. dxe5 Qc5 24. Kb1 Nc7 25. Bxh6 $18 {Stockfish10})) (12. Ba5 $1 b6 13. Bb4 c5 14. dxc5 Nd5 15. Ba3 bxc5 16. Bxc5 Nge7 17. h4 g4 18. Nfxe5 f5 (18... O-O 19. Qxg4 $18) (18... h5 19. Nd6+ Kf8 20. Qd4 Qa5+ 21. c3 Kg8 22. Ndxf7 Nf5 23. Qc4 Bb7 24. Nxh8 Bxe5 25. Ng6 Rc8 26. Nxe5 Rxc5 27. Qb3 Qc7 28. Nd3 $18 {Stockfish10}) 19. Nd6+ Kf8 20. Nc6 Qc7 21. Nxf5 Qxc6 22. Bxe7+ Nxe7 23. Qd8+ Qe8 24. Qxe8+ Kxe8 25. Nxg7+ $18 {Stockfish10}) 12... Qxd1+ 13. Rxd1 Nd5 14. Nd6+ {if I can get a N onto e6 or d6 I can go to sleep for the rest of the game- Tarrasch.However usually in these cases there is still an e or a d pawn still on its original square, when the enemy pieces can scarcely move. Here the N is on its own, with an entire Bl army watching it, while the Wh N has only half support from a B & an f3 N.} (14. Bd2 c5 15. b3 $16 {Stockfish10}) (14. Bd4) 14... Kf8 15. Bd4 Nge7 (15... b6 {considered} 16. c4 Nb4 17. Bd3 {Stockfish10} (17. Rd2 {a more natural human move, looked at by Bl, is disliked by Stockfish10} c5 18. Bc3 Na2 $15) 17... Nxd3+ 18. Rxd3 Ne7 (18... c5 19. Bc3 Ba6 20. h4 g4 21. Nd2 f5 22. Ke2 $16 {Stockfish10}) 19. b4 Nf5 20. Bc3 Nxd6 21. Rxd6 Ke7 22. c5 Rd8 23. Nd2 $16 { Stockfish10}) 16. c4 Nf4 (16... g4 17. Nh4 Nf4 18. Bc5 Bxe5 19. g3 Nfg6 20. Nxc8 Rxc8 21. Nxg6+ fxg6 22. Rd7 Bf6 23. Rxb7 $18 {Stockfish10}) 17. h3 { holding up g4 to secure the e pawn} (17. Bc5 Kg8 18. g3 Nfg6 19. Ne4 Bf8 20. h4 g4 21. Nf6+ Kg7 22. Nh5+ Kh7 23. Nh2 Nxe5 24. Nf6+ Kg7 25. Bd4 N7g6 26. Ne8+ Kh7 27. Nc7 Rb8 28. Bxa7 Nd7 29. Nxg4 $18 {Stockfish10 knows how to bring in the reinforcements}) 17... Nf5 18. Bc5 (18. Bxa7 Nxd6 19. Bc5 Rxa4 20. Bxd6+ Kg8 21. g3 Ng6 22. Bd3 $16 {Stockfish10}) (18. Bc3 Nxd6 {Fritz13} (18... Ng6 { Stockfish10}) 19. exd6 Bxc3+ 20. bxc3 Bd7 21. Ne5 Ke8 22. g3 Ng6 23. Nxg6 fxg6 24. Bg2 $16 {Stockfish10}) 18... Kg8 19. g3 (19. Ne4 b6 20. g3 Nh5 21. Ba3 c5 22. Bd3 (22. g4 Bb7 $19) 22... Bb7 23. O-O Ne7 24. Rfe1 $16 {Stockfish10}) (19. Nxc8 Rxc8 20. Rd7 {Fritz13} b5 21. a5 a6 22. Ra7 Ng6 23. g4 Nfh4 24. Nxh4 gxh4 25. Rxa6 Nxe5 26. Ra7 Nxc4 27. Bxc4 bxc4 28. O-O Bxb2 29. Rb7 Bf6 30. a6 c3 31. a7 Kg7 32. Rc1 $16 {Stockfish10}) 19... Ng6 $11 20. Nxf5 (20. h4 {Stockfish10, Fritz13 & Komodo12} g4 21. Nxf5 exf5 22. Rd8+ Nf8 (22... Kh7 23. Ng5+ $18) ( 22... Bf8 23. Bxf8 Nxf8 24. Nd4 Kh7 25. Bd3 Ng6 26. Rxh8+ Kxh8 27. Kd2 Nxe5 28. Re1 f6 $14) 23. Nd4 Kh7 24. f4 Ne6 25. Rxh8+ Bxh8 26. Nxe6 Bxe6 27. Bd3 f6 $11 {Stockfish10}) 20... exf5 21. Bd6 {Fritz13} (21. h4 gxh4 22. b3 Be6 23. Nxh4 Nxh4 24. Rxh4 Bxe5 $11 {Stockfish10}) 21... g4 {Fritz13} (21... f6 {Stockfish10 } 22. c5 Nxe5 (22... Be6 23. Nd4 Bd5 24. Rg1 Nxe5 25. Bg2 Bxg2 26. Rxg2 Re8 27. Kf1 $11 {Stockfish10}) 23. Nxe5 fxe5 24. Bc4+ Kh7 25. h4 g4 26. O-O $11 { Stockfish10}) 22. Nh4 Nxe5 23. b3 (23. Bxe5 {both Engines} Bxe5 24. Bd3 Be6 25. Nxf5 gxh3 26. b3 Re8 $11 {Stockfish10}) 23... Be6 (23... Ng6 {both Engines} 24. Ng2 Bc3+ 25. Ke2 Kg7 $17 {Stockfish10}) (23... h5 $11 {Stockfish10}) 24. Bg2 ( 24. Bxe5 {both Engines} Bxe5 25. Bd3 Bc3+ 26. Kf1 Rd8 $15) 24... Ng6 $17 25. hxg4 Nxh4 (25... fxg4 {Fritz13} 26. Nxg6 Bc3+ 27. Kf1 fxg6 $17) (25... Bc3+ 26. Kf1 Nxh4 $17 {Stockfish10}) 26. Rxh4 Bc3+ (26... fxg4) 27. Kf1 fxg4 28. Be4 ( 28. Rh5) 28... Re8 (28... f5 29. Bc2 Kf7 {Stockfish10}) 29. Bc2 h5 {Stockfish10 } 30. Rh1 Kg7 31. Kg2 Bc8 $19 {Stockfish10} (31... b6 {Fritz13} 32. Rd3 Bf6 $17 ) 32. Rd3 Bf6 33. Rd2 (33. Re3 {both Engines, expected} Rxe3 34. fxe3 Be6 $19 { Stockfish10}) 33... Bg5 (33... c5 {both Engines} 34. Bxc5 (34. Bd1 b6 35. Bf4 Bb7+ 36. f3 Rd8 $19 {Stockfish10}) 34... b6 35. Be3 Bb7+ $19) 34. Rdd1 Re2 ( 34... b6 {both Engines} 35. c5 Be6) 35. Bd3 Rd2 (35... Rb2 $2 36. Be5+) 36. Rxd2 Bxd2 {getting rid of a pair of Rs helps Bl take the pressure off the h pawn , though Bl could have played for h4 earlier} 37. Bc5 (37. Bb8) 37... b6 38. Bd4+ f6 39. Be4 c5 40. Bb2 (40. Rd1 {both Engines, holds on longer} Bg5 41. Bc3 Re8 42. Bc6 Re6 43. Rd5 Kf7 44. Rxg5 fxg5 45. Bd5 Bd7 $19 {h4 will be coming}) 40... Bg5 (40... Re8 $1 {both Engines- don't defend weak pawns, attack elsewhere with Rs} 41. Bd5 Re2 42. Bc1 (42. Rf1 Bf5 $19) (42. Rxh5 Be3 $19) 42... Bxc1 43. Rxc1 a5 $19) 41. Rd1 (41. Bd5 Re8 (41... Kg6) 42. Rxh5 Kg6 43. Rh1 Re2 44. Bc1 Bxc1 45. Rxc1 Rb2 46. Rc3 Bf5 $17 {Stockfish10}) 41... Re8 $19 42. f3 (42. Bd5 Re2 43. Bc1 Bxc1 44. Rxc1 a5 $19) 42... gxf3+ 43. Bxf3 Bg4 44. Bc1 (44. Rd3 Re1 45. Bc3 Rc1 {and Wh is running out of moves}) 44... Bxc1 45. Rxc1 Re3 46. Bxg4 {Fritz13} (46. Bc6 {Stockfish10 suggests that Wh might be best keeping the B for some defensive tasks, though} a5 47. Rc2 (47. Rb1 Kg6 48. Rb2 Re2+ 49. Rxe2 Bxe2 50. Be4+ Kg5 51. Bc2 Kg4 {should win easily, as Wh's Q side pawns are easy targets once the outside pawn lures the K away}) 47... Rxb3 48. Rd2 Kg6 $19) 46... hxg4 {the pawn cuts off the Wh K & helps the Bl K enter in} 47. Rd1 {activity is the best bet} (47. Rb1 {Fritz13 sits and defends passively}) (47. a5 {Stockfish10 gets rid of as many pawns as possible} ) 47... Rxb3 (47... a5 {may be even stronger, keeping an extra Q side pawn, but in R endings it's not the number of pawns,that matters most; it's how advanced they are & relative K positions.}) 48. Rd7+ Kg6 49. Rxa7 Rb4 (49... Rb2+ {, but the ch may come in useful later} 50. Kf1 Rc2 51. a5 bxa5 52. Rxa5 Rxc4 53. Ra3 Kf5 {more or less the game continuation}) 50. Ra6 Kf5 {with the Wh R away on the Q side there are mating possibilities for Bl} 51. a5 bxa5 52. Rxa5 Rxc4 53. Ra8 (53. Ra2 Rc3 54. Re2 c4 $19 {and something has to give} 55. Re8 Rd3 56. Kf2 c3 57. Rc8 Rf3+) 53... Rc2+ 54. Kf1 Ke4 55. Rf8 f5 56. Rf7 c4 57. Kg1 Rc3 {playing ultra safe} (57... c3 58. Kf1 Rb2 59. Rc7 c2 {is quickest} ) 58. Kg2 Rf3 {cutting off the K} 59. Rd7 c3 60. Rd8 c2 61. Rc8 Kd3 62. Rd8+ Ke2 63. Re8+ Kd2 0-1 [Event "Dyfed League:Aberystwyth-CardiganA"] [Site "online arena"] [Date "2019.03.19"] [Round "?"] [White "Watkin-Jones, A."] [Black "Haigh, A."] [Result "1-0"] [ECO "D37"] [WhiteElo "1928"] [BlackElo "1788"] [Annotator "kemen"] [PlyCount "48"] [EventDate "2019.??.??"] {[%evp 0,11,45,20,26,-21,-19,4,-3,-3,45,15,38,-50]} 1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. d4 Nbd7 5. Bf4 (5. Bg5 {main}) 5... Bb4 6. Qc2 (6. e3 {main}) 6... O-O 7. e3 c6 (7... c5 {main}) 8. Bd3 (8. a3) 8... dxc4 9. Bxc4 Nd5 10. O-O ({2-0} 10. Bg3) 10... Nxf4 11. exf4 Nf6 (11... Bxc3 12. bxc3 Nb6 13. Bd3 g6 14. Ne5 Qf6 15. g3 Qg7 16. Rab1 {Aanonsen-Olsen, NOR Seniors , Lillehammer 2013,1-0}) 12. g3 (12. Rad1 {Komodo12} Nd5 13. g3 h6 14. Ne5 Qe7 15. Bd3 Bd6 16. Qe2 Nf6 17. Bb1 Rd8 18. Qc2 g6 19. Rfe1 {Bagaturov-Yagiz, Izmir op 2003,1-0}) (12. Ne4 { Stockfish10}) 12... Qc7 13. Ne4 Be7 (13... Nxe4 14. Qxe4 $14 {both Engines}) 14. Rfd1 b6 15. Bd3 h6 (15... Nd5 $14 {both Engines}) 16. Ne5 (16. Rac1 { both Engines}) 16... Bb7 17. Rac1 Rac8 18. Qe2 (18. h4 {Stockfish10}) (18. Nxf6+ Bxf6 19. Bh7+ Kh8 20. Be4 c5 21. dxc5 Bxe4 22. Qxe4 Bxe5 23. Qxe5 Qxe5 24. fxe5 Rxc5 25. Rxc5 bxc5 26. Rd7 $14 {Komodo12}) 18... Nxe4 19. Bxe4 $16 { Komodo12} (19. Qxe4 {Rudy & Stockfish10} f5 20. Qe3 $16) 19... Bf6 20. Qf3 Rfd8 (20... Bxe5 21. fxe5 Rfd8 22. b4 $16 {Komodo12}) 21. Rc3 (21. Nxc6 Bxc6 22. Rxc6 Qb8 23. d5 (23. Rxc8 Qxc8 24. d5 $16 (24. Qc3 Qc5 $11) 24... Bxb2 25. Qb3 Bf6 26. d6 $16 {Komodo12})) 21... Bxe5 22. dxe5 $14 (22. fxe5 $16 {Komodo12}) 22... Rxd1+ 23. Qxd1 c5 (23... Rd8 24. Rd3 Rxd3 25. Qxd3 c5 26. Bxb7 Qxb7 27. Qd8+ Kh7 28. Qd3+ g6 $11 {Komodo1`2}) 24. Bxb7 Rd8 $2 {a Zwischenzug that loses a piece ( just like Hammett vs Watkin-Jones, Dyfed League 2019,0-1 a few weeks earlier} (24... Qxb7 25. Rd3 a5 26. Rd7 Qc6 27. Rd6 Qb5 28. Qc2 c4 29. Kg2 $14) 1-0 [Event "Dyfed League:Aberystwyth-CardiganA"] [Site "online arena"] [Date "2019.03.19"] [Round "?"] [White "Brewer, Ben"] [Black "Van Kemenade, J."] [Result "1-0"] [ECO "A46"] [WhiteElo "1555"] [BlackElo "1761"] [Annotator "kemen"] [PlyCount "81"] [EventDate "2019.??.??"] {[%evp 0,4,31,27,28,32,46]} 1. d4 Nf6 2. Nf3 h6 {preventing Bg5} 3. c4 d6 4. Nc3 Nbd7 (4... Bf5 {main}) 5. e4 e5 6. dxe5 $146 {after the exchange in the centre, Bl has easy equality. The pawns are balanced, but Wh has a potential hole on d4.} (6. Be2) (6. d5 Be7 7. Be2 {Taylor-J Van Kemenade, West Wales Open 2011,1-0}) (6. Be3 g6 7. h3 Bg7 8. Qd2 Nh5 {Piankov-R Van Kemenade, Arena 2016,0-1}) (6. g3 Be7 7. Bg2 O-O 8. O-O {Johnsen-Morcom, Guernsey op 2017,1-0}) 6... dxe5 $11 7. a3 a5 8. Be2 Be7 (8... Bc5 {could be played}) 9. O-O O-O 10. Qc2 c6 11. Rd1 Qc7 12. Be3 (12. Rb1 Nh5 (12... a4 13. Nxa4 Nxe4 14. Qxe4 Rxa4 15. b4 f5 16. Qc2 Ra8 $11) 13. b4 Nf4 14. Bf1 axb4 15. axb4 Rd8 16. c5 Nf8 $11 {Stockfish10}) 12... Ng4 (12... Bc5 13. Bxc5 Nxc5 14. b4 axb4 15. axb4 Rxa1 16. Rxa1 Ne6 $11 {Stockfish10- though Wh has to be careful in endings as his B may easily become inferior}) 13. Bd2 Bc5 14. Be1 Re8 15. Na4 Be7 (15... b6 { Stockfish10} 16. Nh4 (16. Nxc5 Nxc5 17. b4 axb4 18. axb4 Rxa1 19. Rxa1 Ne6 20. c5 bxc5 (20... b5) 21. bxc5 Qe7 22. h3 Nf6 23. Bc4 (23. Nxe5 Nd4 $19) 23... Nf4 24. Bf1 Nh7 $11 {and Wh needs to watch that Bl doesn't get a powerful K side initiative}) 16... Ngf6 17. Nf5 Bf8 18. b4 axb4 19. axb4 Nh7 $11 {Stockfish10}) 16. h3 (16. c5 $16 {Stockfish10}) (16. b4 axb4 17. axb4 b6 {Stockfish10}) 16... Ngf6 17. b4 (17. c5) 17... axb4 18. axb4 c5 19. Nxc5 {this N is better kept on to go to d5 eventually} (19. b5 {Stockfish10} Nf8 20. Nc3 (20. Bc3 Ng6 21. Bd2 Nh5 22. Bf1 Nhf4 23. Nc3 Rxa1 24. Rxa1 Qb8 25. Nd5 Ne6 $14) 20... Rxa1 21. Rxa1 Ne6 22. Qd1 Rd8 23. Nd2 Nd4 $11) (19. bxc5 Nxc5 20. Nc3 Bd7 $11 {Stockfish10}) 19... Rxa1 20. Rxa1 Nxc5 21. bxc5 Bxc5 $15 {the Bl pieces are a little better placed than the Wh ones} 22. Ba5 b6 (22... Qc6 23. Nd2 Be6 24. Bc3 Nd7 25. Qb2 f6 $15 {Stockfish10}) 23. Bc3 Bb7 24. Nd2 Nd7 (24... Rd8 $5) 25. Nb3 Be7 26. Rb1 Bg5 (26... Rd8) 27. g3 {weakens the K side, when there is no need to stop the B fromgoing to f4} (27. c5 $5 {Stockfish10 wants to sacrifice this pawn to get some piece play , but when it gets there thinks the better of it.} Nxc5 28. Nxc5 Qxc5 29. Rb5 Bxe4 30. Qb2 Qd6 31. Rxb6 (31. Bxe5 Qg6 32. Bf1 Re6 $15) 31... Qe7 32. Qb4 Qxb4 33. Rxb4 Bg6 $15 {Stockfish10}) (27. Bb4 Rc8 28. Rd1 Bc6 $11 {Stockfish10}) 27... Qc6 28. Bd3 (28. f3 {may be better, though Wh still needs to be careful} Qe6 29. Kg2 Bc8 30. Rh1 Be7 31. h4 Rd8 $15) 28... f5 $17 { with all the Wh pieces on the Q side the K is in danger} 29. Re1 (29. Bf1 Qxe4 30. Qxe4 Bxe4 31. Rd1 Rd8 $17 {Stockfish10 thinks is best defence}) 29... f4 ( 29... Nf6 $1 $19 {Stockfish10} 30. f3 fxe4 31. fxe4 (31. Bxe4 Nxe4 32. Qxe4 ( 32. Rxe4 Rf8 33. Kg2 Qa4 $19) (32. fxe4 Qxc4 $19) 32... Qd7 33. Qg6 Re7 34. g4 e4 35. Nd4 Bf6 $19 {there are too many holes & loose pieces in the Wh position} ) 31... Nh5 32. h4 Be7 33. Re3 Nf6 34. Qe2 h5 (34... Qc7 35. Be1 Ra8 $19) 35. Kg2 Rd8 36. Be1 Ng4 37. Rf3 Qg6 38. Bb1 Kh8 $19 {Stockfish10- however, though all of Wh's pieces remain awkwardly placed, there seems to be no clearcut winning manouevre}) 30. Bb4 (30. g4 Rd8 31. f3 Be7 32. Bf1 Qe6 $15 { Stockfish10- Wh has a very bad KB for the ending, but the K side seems sufficiently barricaded}) 30... Qg6 (30... fxg3 31. fxg3 Qg6 32. Kh2 h5 33. Nd2 h4 34. g4 Nf8 $17 {Stockfish10}) 31. Kg2 (31. g4 Bh4 32. Rc1 h5 33. f3 Rc8 34. c5 bxc5 35. Bc4+ Kh7 36. Bc3 Ra8 $15 {Stockfish10}) 31... Nf6 $19 (31... Bh4 $19 {Stockfish10} 32. g4 (32. c5 fxg3 33. f3 Nf6 34. Nc1 Nh5 35. Ne2 Rd8 36. Bc4+ Kh7 37. Rd1 Rxd1 38. Qxd1 Bxe4 $17 {Stockfish10}) 32... h5 33. Rg1 hxg4 34. c5 (34. Be1 Nf6 35. Nd2 Rd8 36. Kf1 g3 37. f3 Nd7 38. Kg2 Qh5 39. c5 Nxc5 40. Be2 Bc8 $19) 34... bxc5 35. Bxc5 Nxc5 36. Nxc5 Bc8 $19 {Stockfish10}) 32. c5 bxc5 (32... fxg3 33. fxg3 Bf4 34. Qf2 Rd8 35. Bb1 Nxe4 $19 (35... Bc8 36. c6 Nh5 37. g4 Bxg4 38. hxg4 Qxg4+ 39. Kf1 Rc8 40. Ba2 Kh7 41. Nd2 Ng3+ 42. Kg1 Rxc6 43. Bf7 Rf6 $19 {Stockfish10}) 36. Qf3 Qxg3+ 37. Qxg3 Nxg3+ 38. Kg1 Bd5 39. Bc2 Rc8 $19 {Stockfish10}) 33. Bxc5 (33. Nxc5 Bc8 34. Bc4+ Kh7 35. Qb3 Qh5 36. Ne6 f3+ 37. Qxf3 Qxf3+ 38. Kxf3 Bxe6 39. Bxe6 Rxe6 40. h4 Rb6 41. hxg5 Rxb4 42. gxf6 gxf6 $11 {Stockfish10}) 33... Bc8 $19 {Bl was running low on time here } (33... Bh4 $1 $19 {Stockfish10} 34. g4 (34. Nc1 fxg3 35. f3 Nh5 $19) 34... h5 35. g5 Nh7 $1 (35... Qxg5+ 36. Kh1 Rc8 37. Nd2 Qf5 38. Kh2 Qd7 39. Nf3 Rxc5 40. Qxc5 Bg3+ 41. fxg3 Qxd3 $19 {Stockfish10}) 36. Kh2 Nxg5 37. Qe2 f3 38. Qa2 Kh8 39. Bf1 Ra8 40. Qb2 Nxe4 $19 {Stockfish10}) 34. Nd2 Bh4 (34... fxg3 35. fxg3 Nh5 36. Nf1 (36. g4 Nf4+ 37. Kh2 Nxd3 38. Qxd3 Rd8 $19) 36... Nf4+ 37. gxf4 ( 37. Kh2 Nxd3 38. Qxd3 Qh5 39. h4 Bxh4 $19) 37... Bh4+ 38. Kh2 Bxe1 $19 { Stockfish10}) 35. Bc4+ Kh8 36. Qd3 Nh5 (36... fxg3 37. fxg3 Nh5 38. Qf3 Rd8 39. Nf1 Nf4+ 40. Kh2 Qc6 41. Bf2 Bxg3+ (41... Qxc4 42. gxf4 Bxf2 43. Qxf2 exf4 44. Qxf4 Qa2+ 45. Kh1 (45. Kg3 Qe6 46. Qf5 Qe7 47. Qf2 Rf8 48. Qe3 Qe5+ 49. Kg2 Qh5 50. Nd2 Rf6 $19) 45... Bxh3 $19) 42. Bxg3 Qxc4 43. Bxf4 exf4 44. Qxf4 Qa2+ $19 {transposes to previous}) 37. g4 Nf6 (37... f3+ 38. Qxf3 Nf4+ 39. Kh2 Qc6 40. Be3 Rf8 41. Ra1 Ne6 42. Qe2 Nd4 43. Qd3 h5 44. Rg1 hxg4 45. hxg4 Qg6 $14 { Stockfish10}) (37... Rd8 {Rudy & Stockfish10, bringing the last piece in to the attack} 38. Qc3 (38. Qe2 $2 f3+ 39. Qxf3 Nf4+ 40. Kh2 Rxd2 $19) 38... Bxg4 39. hxg4 Qxg4+ 40. Kf1 Rxd2 41. Qxd2 Qf3 $1 {threat Ng3ch, Stockfish10} (41... f3 {Rudy's idea, allows Wh to escape} 42. Ra1 Qg2+ 43. Ke1 Qg1+ 44. Bf1 Nf4 45. Qd7 Bxf2+ 46. Bxf2 Ng2+ 47. Kd2 Qxf2+ 48. Kc3 $18) 42. Kg1 Qg4+ 43. Kf1 (43. Kh2 Bg3+ 44. fxg3 Qxg3+ 45. Kh1 Qh4+ 46. Kg2 Qg3+ 47. Kf1 Qf3+ 48. Kg1 Qg3+ $11 49. Qg2 Qxe1+ 50. Bf1 Nf6 51. Bf8 Nh5 $11 {Stockfish10}) 43... Qf3 $11) 38. Nf3 $16 Bg5 (38... Nxg4 {last chance, but Bl, correctly , didn't see it working- though there are complications} 39. Nxh4 (39. hxg4 Qxg4+ 40. Kh1 Rd8 41. Qe2 Qh3+ 42. Nh2 Bb7 43. Rg1 $16 {Stockfish10}) 39... Ne3+ (39... Qg5 40. hxg4 Qxg4+ 41. Kf1 Qxh4 42. Ke2 Rd8 43. Bd5 $18 {Stockfish10}) 40. Kh2 Qh5 41. Be7 $1 (41. Nf5 Nxf5 42. exf5 Bxf5 43. Qc3 $18) (41. fxe3 $2 Qxh4 42. Qd2 (42. exf4 Qxe1 $19) 42... Qxh3+ (42... Rd8 $1 43. Bd5 f3 44. Rf1 Qxh3+ 45. Kg1 Ba6 46. Rf2 Rb8 47. Ba2 Kh7 (47... Be2 $19)) 43. Kg1 Qg3+ 44. Kh1 Bg4 45. Rf1 Bf3+ 46. Rxf3 Qxf3+ 47. Kg1 Rc8 $19) 41... Nxc4 42. Qxc4 Bxh3 43. Kxh3 Rxe7 44. Qc8+ Re8 45. Qg4 $18 {Stockfish10}) 39. Bb5 $18 Rg8 40. Nxe5 Qh7 41. Nf7# 1-0 [Event "Dyfed League:Aberystwyth-CardiganA"] [Site "online arena"] [Date "2019.03.19"] [Round "?"] [White "Francis, Matthew"] [Black "Osinga, Awne"] [Result "1-0"] [ECO "C72"] [WhiteElo "1712"] [BlackElo "1350"] [Annotator "kemen"] [PlyCount "70"] [EventDate "2019.??.??"] {[%evp 0,17,30,34,24,28,11,11,18,-12,41,0,8,8,13,-6,3,-8,41,34]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 {main} (3... d6 {has been Awne's usual response}) 4. Ba4 d6 5. c3 Bd7 6. O-O (6. d4) 6... Be7 (6... g6 {main}) 7. h3 (7. d4) 7... Nf6 8. Re1 Na7 {an uncommon way of offering an exchange- the N is not doing a great deal on a7} (8... O-O) 9. Bc2 (9. Bb3 Be6 10. d4 exd4 11. cxd4 d5 12. Nc3 c6 13. Ng5 O-O 14. Qc2 h6 15. exd5 cxd5 16. Nxe6 fxe6 17. Rxe6 { Marjancevic-Muraja, CRO cup 2018,1-0}) 9... O-O (9... h6 10. d4 Bc6 11. Nbd2 Nb5 12. dxe5 dxe5 13. Nxe5 {Szabo Thomka-Nagy,HUN ch tm 2017,1-0}) 10. d4 exd4 (10... Nc6 11. Nbd2 Qc8 12. Kh2 Be8 13. Nf1 Nd7 14. Ng3 f6 15. Be3 b6 { Vereschildt-Elshout, NED ch U20 girls, Nijmegen 1993,1/2-1/2}) 11. cxd4 h6 $146 (11... Ne8) (11... Bb5 {main lines}) 12. Nc3 (12. e5 dxe5 13. dxe5 Ne8 14. Qd3 g6 15. Bxh6 $18 {Komodo12}) 12... Nh7 {all of Bl's minor pieces are now lined up along the second rank} 13. e5 f5 $18 (13... Re8 14. Nd5 Nc6 15. Qd3 Nf8 16. Bd2) 14. Bf4 (14. exf6 Nxf6 15. Qd3 Nc6 16. Bxh6 $18 {Komodo12}) 14... Bg5 15. Nxg5 (15. Bxg5 {is more accurate} Nxg5 16. Bb3+ Kh7 17. e6 Nxf3+ 18. Qxf3 Nc6 19. Qe3 Bc8 20. e7 Nxe7 21. Qxe7 $18 {Komodo12}) 15... Nxg5 (15... hxg5 16. Bh2 dxe5 17. Bb3+ Kh8 18. dxe5 Bc6 19. Qxd8 Raxd8 20. e6 Rfe8 21. Bxc7 $18 { Komodo12}) 16. Bb3+ Kh8 17. e6 $18 Nxe6 18. Bxe6 Nc6 19. Qd2 (19. d5) (19. Bxd7 ) 19... Rf6 20. Bxd7 (20. d5) 20... Qxd7 21. Re2 g5 22. Bh2 (22. d5) 22... f4 23. Ne4 Rf7 24. Rae1 (24. f3 {allows the h2 B to return to the centre}) 24... Rg8 25. Qc3 (25. f3) 25... d5 26. Nc5 Qc8 27. Re6 Rh7 28. Nd3 (28. Nxb7) 28... h5 {(draw?)} 29. Bxf4 {returning material in order to force a win against a collapsed Bl K side- though not strictly neccessary} (29. h4 {undermines those pawns as well}) 29... gxf4 30. Nxf4 $18 Nd8 (30... Qf8 31. Ng6+ Rxg6 32. Rxg6 Ne7 33. Rge6 Ng8 34. R1e5 $18 {Komodo12}) 31. Re8 (31. Ng6+ {forces a quick win } Kg7 (31... Rxg6 32. Rxg6) 32. Ne7 (32. Re7+ Nf7 (32... Kxg6 33. Qd3+ Qf5 34. R1e6+ Nxe6 35. Rxe6+ Kg7 36. Qxf5 Rd8 37. Re7+ Kg8 38. Qxh7+ Kf8 39. Qf7#) 33. Qf3 Kxg6 34. R1e6+ Qxe6 35. Rxe6+ Kg7 36. Qf6+ Kf8 37. Re7 Rhg7 38. Rxc7 Rxg2+ 39. Kf1 Rg1+ 40. Ke2 $18 {Komodo12})) 31... Qd7 (31... Qf5 32. Rxg8+ Kxg8 33. Re8+ Kf7 34. Rxd8 Qxf4 35. g3 Qf6 36. Qxc7+ Kg6 37. Qc2+ Kh6 38. Qd2+ Kg7 39. Rxd5 $18 {Komodo12}) 32. Rxg8+ (32. Ng6+ Kg7 33. R1e7+ Qxe7 34. Rxe7+ Nf7 ( 34... Kxg6 35. Qd3+) 35. Ne5 Rf8 36. Qg3+ Kh8 37. Qg6 $18 {Komodo12}) 32... Kxg8 33. Qf3 (33. Qg3+ Rg7 34. Qh4 $18 {Komodo12}) 33... h4 34. Qxd5+ (34. Nxd5 ) 34... Kf8 (34... Qxd5 35. Nxd5 Kf8 36. Re4 $18 {with 2 pawns up}) 35. Ng6+ Kg7 1-0