Wednesday, 27 June 2018

Summer Break

Aberystwyth Chess Club is now taking its summer break. Meetings will resume in September. A change of venue may be necessary, so please watch this space for news.

Monday, 28 May 2018

Lap of Honour

The Dyfed League is now finished for the season, with Aberystwyth the new champions. The title was already secure when we played our last match of the season, against Carmarthen at the Emlyn Cafe, Tanygroes on Wednesday 16th May. On top board Brendan-Budok Durand-Le Ludec went for broke in a Sicilian against Huw Morcom, launching a kingside attack more reminiscent of a King's Indian. White missed out on a hard-to-see chance to take advantage of the looseness this created in his opponent's own king's position, and instead lost material in the complications. Rudy van Kemenade also attacked on the kingside, with his Bird's Opening, but his advancing pawns were stopped, and David Buttell, unlike his team-mate, found a way into the gaps they had left behind them to force mate. On a night when Aber seemed intent on inflicting the maximum possible violence in the shortest time, Adam Watkin-Jones also attacked on the kingside in a Pirc Defence, and landed the killer blow before Paul Orton had even finished developing. While all this was going on, Julie van Kemenade, usually a fierce attacker herself, had reached a comfortable position against Robert Narayan-Taylor's shaky-looking irregular defence, but, seeing a draw was enough to bring Aberystwyth's season to a successful close, she offered it. A 2½ - 1½ win meant the Club had gone through the whole season undefeated, conceding only one draw, to second-placed Cardigan A.

[Event "Dyfed League:Aberystwyth-Carmarthen"] [Site "?"] [Date "2018.05.16"] [Round "?"] [White "Morcom, Huw"] [Black "Durand-Le Ludec, Brendan"] [Result "0-1"] [ECO "B40"] [WhiteElo "1931"] [BlackElo "2183"] [Annotator "Rudy"] [PlyCount "52"] [EventDate "2017.10.05"] 1. e4 c5 2. Nf3 e6 3. Be2 (3. d3 {has been Huw's move order in 9 games}) 3... a6 (3... Nc6 {most frequent}) 4. O-O b5 (4... Qc7) 5. d3 {transposes to other games} (5. a4 {main} b4 6. c3 Bb7 7. cxb4 cxb4 8. d3 {Zherebukh-Kamsky, USA ch, St Loius 2017,1/2-1/2}) (5. d4 {has scored well for Wh, 5 wins, 2 draws}) (5. Re1 {2 wins}) 5... Bb7 {this position was reached , but with Bl to play, because of a BC$-e2 sequence in Osinga-Durand Le Ludec, Dyfed Closed 2017,0-1 continuing g6 7, Nbd2,Bg7 8.Rb1, d5 9.b3, Nf6 10.Bb2, 0-0} 6. Nbd2 g6 (6... Nc6 $11 {Stockfish9} 7. Re1 Qc7 8. c3 Nf6 9. a3 Be7 10. d4 cxd4 11. cxd4 Qb6 12. e5 Nd5 13. Ne4 h6 14. Nc3 Na5 15. Bd2 O-O {Morcom-Gieben,Guernsey op, Vale 2014, 0-1}) (6... d6 7. c3 Nf6 8. d4 cxd4 9. cxd4 Nxe4 {Larico-Borda, La Paz op 2014, 0-1}) 7. Re1 (7. a4 $16 {Stockfish9 & Komodo11}) 7... Bg7 8. Nf1 (8. e5 d5 9. d4 cxd4 10. Nb3 Nd7 11. Nbxd4 Ne7 $14 {Stockfish9}) 8... Ne7 9. Ng3 O-O 10. c3 d5 11. Qc2 (11. Bf4 Nd7 12. Qd2 e5 13. Bh6 $11 {Stockfish9}) (11. h4 $5 { Stockfish9}) 11... Nd7 12. Bf4 (12. Be3 Qc7 13. Bg5 Nc8 14. Rad1 Nd6 15. h4 f6 16. Be3 e5 17. h5 $11 {Stockfish9- a very unbalanced position}) 12... e5 13. Bg5 h6 14. Be3 (14. Bd2 $5 $15) (14. Bxe7 $5 $15) 14... f5 $15 15. exf5 gxf5 ( 15... Nxf5 $17 {Stockfish9- Bl gets attacking chances without the loose Bl K that results from the text}) 16. Nh5 $11 (16. Nxe5 {doesn't quite work} Nxe5 17. Bxc5 Rc8 18. Bxe7 Qxe7 19. d4 Ng6 20. Nxf5 Qg5 21. Nxg7 Nh4 22. g3 Qxg7 { Wh has 3 pawns for the piece but faces difficulty gettting his remaing pieces into play.} 23. Qd3 Rc6 24. Kh1 Rxf2 25. Rf1 Rxf1+ 26. Rxf1 Ng6 $17) 16... f4 ( 16... Ng6) 17. Nxg7 {according to Stockfish9 , Wh should wait with this move, & hope to show the Bl centre is overextended. However it does look like handing over the initiative to Bl, & in practical play its hard for Wh to handle such positions with the precision that Engines have.} (17. Bd2 Qb6 18. h3 Ng6 19. Nh2 e4 20. a4 Nde5 21. Nxg7 Kxg7 22. d4 Nc4 23. axb5 axb5 24. Rxa8 Rxa8 25. Bh5 Rf8 26. b3) 17... Kxg7 18. Bd2 e4 (18... Nf5 19. Bf1 e4 (19... Qf6 $15 {Stockfish9}) 20. dxe4 dxe4 21. Rxe4 Bxe4 22. Qxe4 $16 {here I was concerned with this exchange sacrifice- Brendan, Wh has good winning chances against the exposed Bl K- Rudy}) (18... Ng6 {Stockfish9builds up first , though then Wh can seek to disrupt the centre with} 19. c4 dxc4 20. dxc4 b4 21. Bd1 (21. Bd3 Bxf3 22. gxf3 Nh4 $17) 21... Qf6 $17 {Stockfish9} (21... e4 22. Rxe4 Bxe4 23. Qxe4 Qf6 $15 {unbalances- the Wh Bs will hold against R & N in an endgame})) 19. dxe4 dxe4 20. Nh4 {Bl spent some time considering the consequences of this position} Nc6 (20... Ng8 {looked at by Rudy} 21. g3 e3 22. Qg6+ Kh8 23. Bd3 Ndf6 24. Bc1 {initially Stockfish thought =, then considers} c4 25. Bf5 Bd5 {near winning} (25... Ra7 {another very threatening move coming to g7})) (20... Ne5 $1 {Stockfish9 & Komodo11} 21. Rad1 Qb6 {Bl keeps on with gradual threats & sooner or later Wh must cede an exchange to eliminate the e4 menace} 22. c4 b4 23. Bf3 Nxf3+ 24. Nxf3 Rae8 25. Ne5 Qc7 26. Nd7 Rf5 27. g4 Rg5 28. Rxe4 Bxe4 29. Qxe4 Rxg4+ 30. Kf1 Qc6 $19) 21. g3 (21. Ng6 {crazy move- Brendan, backed by Stockfish9 & Komodo11 as near winning for Wh ( its an intriguing exploitation of the weak g6 square} Kxg6 $2 (21... Qg5 22. Nxf8 Rxf8 23. Qxe4 $16 {Komodo11}) (21... Nce5 22. Nxf4 $18 {Stockfish9}) 22. Qxe4+ Kg7 23. Bd3 Nde5 24. Qh7+ Kf6 25. Qxh6+ $18 {Komodo11 & Stockfish9} Ke7 (25... Kf7 26. Qh7+ Ke6 27. Qxb7 Qd7 28. Qb6 Qd6 29. Bc2 Rfb8 30. Rxe5+ Kxe5 31. Re1+ Kf6 32. Bxf4 Rxb6 33. Bxd6 $18 {Stockfish9}) 26. Rad1 Rf6 27. Qg7+ Rf7 28. Rxe5+ Nxe5 29. Qxe5+ Kf8 30. Bxf4 $18 {Stockfish9}) 21... Nce5 $19 22. Bh5 {in pursuit of g6 but too late} (22. Rad1 e3 23. Bc1 (23. fxe3 fxg3) 23... Kh8 $1 $19 (23... exf2+ 24. Kxf2 fxg3+ 25. Kxg3 Qc7 26. Kh3 Rf2 27. Qd2 Rxh2+ 28. Kg3 Nf6 29. Qxh6+ Kf7 30. Bh5+ Nxh5+ 31. Qxh5+ Ng6+ 32. Re5 Qxe5+ 33. Qxe5 Nxe5 34. Kxh2 Rh8 35. Bg5 {Stockfish9 still claims a distinct plus for Bl after hairaising convolutions; though most humans would envisage the position drawn} Rg8 36. Rg1 c4 37. Bd2 Rh8 38. Kg3 Ke6 39. Be3 Rg8+ 40. Kf2 Rxg1 41. Kxg1 Nd3 42. b3 cxb3 43. axb3 Bd5 44. c4 bxc4 45. bxc4 Bxc4 {and Stockfish finally admits a draw as the R pawn is supported by the wrong colour B. Lomonosov tables agree,})) 22... Qg5 23. Rxe4 Bxe4 24. Qxe4 Qxh5 25. Bxf4 Rae8 26. Re1 Nf3+ $19 (26... Ng6 27. Qxe8 Rxe8 28. Rxe8 Qd1+ 29. Kg2 Nxf4+ 30. gxf4 Qg4+ $19 {Stockfish9}) (26... Rxf4 27. Qxf4 Nd3 28. Nf5+ Kh7 29. Rxe8 Qd1+ 30. Kg2 Nxf4+ 31. gxf4 Qd5+ 32. Kg3 Qxf5 $19 {Stockfish9}) 0-1 [Event "Dyfed League:Aberystwyth-Carmarthen"] [Site "?"] [Date "2018.05.16"] [Round "?"] [White "Van Kemenade, R."] [Black "Buttell, D."] [Result "0-1"] [ECO "A03"] [WhiteElo "2015"] [BlackElo "1819"] [Annotator "Rudy"] [PlyCount "68"] 1. f4 d5 2. Nf3 g6 3. g3 b6 {unusually early, but most likely will transpose into main lines} (3... Bg7 {main}) 4. Bg2 Bb7 5. O-O Bg7 6. d3 (6. c4 Nf6 7. Ne5 e6 8. d4 {Tocco-S Kasparov, Arco op 2017,1/2-1/2}) 6... Nf6 (6... Nd7 7. c3 Ngf6) 7. c3 O-O 8. Qe1 (8. Qc2 Nbd7 9. Nbd2) 8... e6 {Bl was concerned about Wh getting f5 in- however this move doesn't really prevent it happening later & does weaken f6} (8... Nbd7) 9. h3 (9. Na3 Nbd7 (9... c5 10. h3 Nfd7 11. e4 Na6 12. e5 Nc7 13. g4 Ba6 14. c4 b5 15. b3 {Van Kemenade-Ashby,Wld ch tm Seniors, Hersonissos 2017,1-0}) 10. h3 Qe7 11. Nh4 Rad8 12. g4 Ne8 { Vrban-Tscharotschkin, Seefeld op 2005,1/2-1/2}) 9... Nbd7 10. Nbd2 (10. g4 b5 ( 10... Ne8 11. Na3 Nd6 12. Nc2 Qe7 13. Qg3 Rae8 14. Rf2 a5 15. Bd2 c5 16. Re1 a4 17. Bc1 f5 {Jirovsky-Orsag, CZE ch tm 2001,1-0}) 11. Na3 a6 12. Nc2 c5 13. Bd2 a5 14. a3 Qc7 15. Qh4 c4 16. Rad1 Nc5 17. Be3 Na4 18. Ncd4 cxd3 19. exd3 Nxb2 20. Rd2 Na4 21. Nxb5 Qd7 22. c4 {Piket-Tiviakov, Bundesliga 2002,0-1}) (10. e4 dxe4 11. Ne5 Ba6 $17 {Komodo11}) 10... c5 11. e4 dxe4 12. dxe4 Qc7 (12... e5 $5 13. Nc4 (13. f5 $5) 13... Nxe4 14. fxe5 b5 15. Nd6 Nxd6 16. exd6 Re8 17. Qf2 Nf6 18. Bf4 Ne4 19. Qc2 h6 20. Rfe1 Qd7 $15 {Komodo11}) 13. g4 {angling for f5 ( & g5 next) or getting the Q & N to weaken the K side with h6, then follow up with f5.} (13. e5 Nd5 14. Ne4 f6 (14... c4 15. Nd4 Ba6 16. Qe2 Nc5 17. Nxc5 Qxc5 (17... bxc5) 18. b4 Qc7 19. Bxd5 exd5 20. a4 Rfe8 21. Qf3 Rad8 22. g4 $14 {Komodo11}) 15. exf6 N5xf6 16. Nxf6+ Nxf6 17. Qxe6+ Kh8 18. Qe5 Qd7 19. Qe2 Rae8 $11 {Komodo11}) 13... c4 (13... Qxf4 14. e5 Nd5 (14... Nxg4 {looked at by Wh, gives Bl several pawns for the piece} 15. hxg4 Qxg4 16. Rf2 Rab8 17. Nf1 c4 18. Be3 $11 {with an unbalanced position- Komodo11}) 15. Ne4 {traps the Q} Ne3 16. Nf6+ Nxf6 17. Bxe3 Qa4 18. exf6 Bxf6 19. Bh6 $18) 14. e5 Nd5 15. Ne4 Nc5 16. Nxc5 Qxc5+ 17. Kh1 (17. Nd4 {considered, but Wh was still after the Q & N manoeuvre}) (17. Kh2 {would have avoided a tactic later, but then e5 is more vulnerable if Wh wants to play f5}) 17... Rad8 (17... Rfd8 {might be better as it vacates f8 for the B in the coming sequence- but it might allow Wh in on f7} 18. Ng5 Qc7 19. f5 h6 20. fxe6 hxg5 21. exf7+ (21. Rxf7 Ne7 22. Bxg5 Bxg2+ 23. Kxg2 Qc6+ 24. Kh2 Nd5 25. Bxd8 Rxd8 26. Rd7 Rxd7 27. exd7 Qxd7 28. Qe4 Qe6 $11) 21... Kf8 22. Bxg5 Bxe5 (22... Qxe5 23. Qh4 $18) 23. Qe4 Kg7 24. Rae1 $18 { Komodo11}) 18. Ng5 Ba8 {preparing a later Qe7} (18... Qe7 $11 {Komodo11}) 19. Qh4 (19. f5 {preferred by both Komodo11 & Stockfish9, though Wh was pursuing a strategy involving a N into f6, which had brough victory in previous games- eg Van Kemenade-Dale, GBR Major op, Liverpool 2008, 1-0 9 in various databases)} exf5 20. gxf5 Nc7 (20... f6 21. Ne6 $18 (21. Nxh7 Rfe8 (21... Kxh7 22. Qh4+ Kg8 23. fxg6) 22. fxg6 Rxe5 23. Qh4 Re2 24. Bf3 Rde8 25. Bf4 R8e4 $11 {Komodo11})) (20... gxf5 21. e6 f6 22. Nf7 $16 {Stockfish9}) 21. Bxa8 Rxa8 22. f6 Bh8 { Komodo11, gives Wh only a small advantage- even though the B is trapped in for the long run.} (22... Bh6 23. Ne4 {though loses the B}) 23. Qh4 h5 24. Qg3 Rfe8 25. Bf4 Rad8 26. Rad1 $14 {but its not at all clear whether after lots of pieces swap, that Bl can hold the ending with an absent B}) 19... h6 20. Ne4 Qe7 21. g5 (21. Qxe7 Nxe7 22. Nd6 {preferred by both Engines, =}) 21... h5 22. Nf6+ Nxf6 (22... Kh8 23. Kh2 {prepares a B sacrifice on h5} Nc7 24. Bxa8 Nxa8 25. Ne4 Rd3 26. Qf2 Rfd8 27. Be3 $11) (22... Bxf6 23. gxf6 Qc5 24. Qg5 { both sides thought would be fatal, but the Engine rides to the rescue} (24. Kh2 Nc7 25. Bxa8 Nxa8 26. Rg1 Rd3 (26... Kh7 27. Rg5 $18 Rh8 28. Qxh5+ $1 Kg8 ( 28... gxh5 29. Rg7+ Kh6 30. f5+ Qe3 31. Bxe3#) 29. Rxg6+ fxg6 30. Qxg6+ Kf8 31. Qg7+ Ke8 32. f7+ Kd7 33. f8=Q+ Kc6 34. Qxc5+ bxc5 35. Be3 $18 {Komodo11}) 27. Qg5 (27. Qxh5 $2 Qxg1+ $19) 27... Qxg1+ (27... Qf2+ 28. Rg2 Qf3 29. Qh6 Qxh3+ 30. Kg1 Rd1+ 31. Kf2 Qh4+ 32. Kf3 Qh3+ 33. Kf2 Qh4+ $11 {Komodo11})) 24... Ne3 25. Bxe3 (25. Qh6 Bxg2+ 26. Kh2 Nf5 $19) (25. f5 Bxg2+ $19) 25... Bxg2+ 26. Qxg2 (26. Kxg2 Qxe3 27. Rf3 (27. Rf2 Rd3 $19) 27... Qe2+ 28. Rf2 Qe4+ 29. Kh2 Kh7 $15 {Bl controls the centre, though his K will have to race back should the heavy material swap off.}) 26... Qxe3 27. Rae1 Qd2 28. Re2 Qd5 $11) 23. gxf6 $2 {the wrong pawn,; trying to use g5 & the g file hands over the initiative to Bl} (23. exf6 Bxg2+ 24. Kxg2 Qb7+ 25. Kh2 Bh8 26. Be3 Rd3 27. Bd4 {both Bl & the Engines are happy here, since mate has been averted. However the Bl B will never return to the game, so Wh can just play for swapping off into an ending only he can win.}) 23... Bxg2+ 24. Kxg2 Qb7+ 25. Kh2 Bh6 $15 26. Rg1 $6 {far too optimistic & entirely missing the strong reply, Wh had to start the process of digging in to defend} (26. Be3 Rd3 27. Qf2 Qe4 28. Rae1 Rfd8 29. Qg2 Qf5 30. Kg1 {and Wh could survive} R8d5 31. Re2 (31. Rf3 Rxe3 32. Rfxe3 Bxf4 33. Re4 Rxe5 34. Rxe5 Bxe5 35. Rf1 Bf4 $17 {the B & K side pawns are too powerful}) 31... Bf8 32. Kh2 {and there is no clear breakthrough, though Bl is definitely superior.}) (26. f5 {considered * extensively looked at afterwards with many kibitzer contributions. It should fail, but would be a practical last chance.} Bxc1 27. fxg6 $5 (27. Raxc1 Rd2+ 28. Rf2 Qd5 (28... Rxf2+ 29. Qxf2 exf5 30. Qf4 Kh7 31. Rd1 (31. Qxc4 Rd8 32. Qe2 Qd5 33. b3 Qc5 34. c4 Rd4 35. Qe3 Rxc4 36. Qxc5 Rxc5 37. Re1 g5 $19 {Komodo11}) 31... Re8 32. Kg3 Qc6 33. Rd2 Qb5 34. Re2 Qd5 $17 {Komodo11- Wh is not yet dead}) 29. fxg6 Qxe5+ 30. Kh1 Qd5+ 31. Kg1 Rxf2 32. Qxf2 (32. Kxf2 Qd2+ 33. Kg3 Rd8 $19) 32... Qg5+ 33. Kh2 Qxc1 $19 {Stockfish9}) 27... Rd2+ 28. Rf2 Qf3 $1 {Stockfish9- kills all of Wh's chances, alternatives looked at on the night sare more complex, though still losing for Wh} (28... Rxf2+ 29. Qxf2 Bh6 30. gxf7+ (30. Rg1 Rd8 31. gxf7+ Kxf7 32. Qe3 Bxe3 33. Rg7+ Kf8 34. Rxb7 Bf4+ 35. Kg2 Bxe5 $19 )) 29. gxf7+ Kh7 30. Rxd2 Bxd2 {and Bf4 is the end}) 26... Qe4 $1 27. Qf2 (27. Qe1 Qf5 28. Rg3 Bxf4 29. Bxf4 Qxf4 30. Qe3 Rd2+ 31. Kg1 Qxe3+ 32. Rxe3 Rxb2 $19 {is the best Stockfish9 can come up & its an easy game for Bl to win} 33. Rd1 ( 33. Re4 Rc8 34. Rd4 g5 35. Rd7 Rc2 36. Rxa7 Rxc3 37. Rd1 Rxh3 38. Rdd7 Rf8 39. Rdb7 Re3 40. Rxb6 Rxe5 41. Rc6 Kh7 42. Rxc4 Kg6 43. Rc2 Kxf6 {and Bl has far too many K side pawns})) 27... Rd3 28. Re1 Qf5 29. Qf1 (29. Be3 {the natural move may be the best bet , but it runs into what Wh saw} Rxe3 30. Rxe3 Qxf4+ { even stronger than} (30... Bxf4+) 31. Qxf4 Bxf4+ 32. Kg2 (32. Rg3 h4) 32... Bxe3 33. Kf3 Bc5 34. Rd1 g5 $19 {and Wh has nowhere left to attack , while the Bl K just walks into the game.}) 29... Rfd8 {Wh is running out of moves} 30. Re2 (30. a4 a6 31. a5 b5 {keeps the Wh R out of the game}) (30. Rb1 Rd2+ (30... h4 {followed by doubling Rs on the 3rd is another plan that Wh has no answer to.}) 31. Bxd2 Rxd2+ 32. Re2 Bxf4+ 33. Kg1 Be3+ 34. Rxe3 (34. Kh2 Qxe5+ 35. Kg2 Qe4+ 36. Kg3 h4+ 37. Kh2 Rxe2+ 38. Qxe2 Bf4+ 39. Kg1 Qxe2 {mating soon})) 30... Rd1 31. Re1 Rxe1 32. Qxe1 Bxf4+ 33. Bxf4 Qxf4+ 34. Kg1 Rd2 0-1 [Event "Dyfed League:Aberystwyth-Carmarthen"] [Site "?"] [Date "2018.05.16"] [Round "?"] [White "Orton, P."] [Black "Watkin-Jones, A."] [Result "0-1"] [ECO "B07"] [WhiteElo "1549"] [BlackElo "1957"] [Annotator "Rudy"] [PlyCount "34"] [EventDate "2018.??.??"] 1. d4 g6 2. e4 Bg7 3. Nf3 d6 4. Be3 {a bit early, probably transposes to other main lines} (4. Nc3 {main, most flexible}) 4... Nf6 {main} (4... c5 {has been tried}) 5. Bd3 {the 2 Bs are slightly getting in each other's way} (5. Nc3 { back to main} O-O 6. Qd2 Nbd7 7. Bd3 c5 8. Ne2 b6 9. c3 Bb7 10. Ng3 { Orton-Weston, Dyfed League 2015,1-0}) 5... Nc6 (5... O-O) 6. c3 e5 7. dxe5 { the exchange leaves Wh passively placed, the Bs clogging up the centre files.} (7. h3 O-O {main, over a 100 games in database, though only gets a 33 % score}) 7... Nxe5 {preferred by the Engines} (7... dxe5 {keeps more pieces on}) 8. Nxe5 dxe5 9. h3 (9. Bb5+ c6 (9... Nd7 $5) 10. Qxd8+ Kxd8 11. Bd3 Kc7 {is fine for Bl }) 9... O-O 10. O-O Nh5 (10... b6 {main, keeps control over c5 & puts B on b7} 11. Qc2 Bb7 12. Nd2 Qe7 13. a4 a5 {R Bennett-L.Davis, S Wales International 2015,0-1}) 11. Kh2 (11. Be2 Nf4 12. Bxf4 exf4 13. Qxd8 Rxd8 14. Rd1 Rxd1+ 15. Bxd1 Be6 $15 {Hoffmann-Berelowitsch, Bundesliga 2009,1/2-1/2}) 11... Nf4 12. Bc2 (12. Bc4 {a more active square for the B} Qf6 13. a4 a6 14. Na3 h5 15. Re1 $11 {Stockfish9}) 12... Qf6 (12... Qe7 {Stockfish9}) (12... Qh4 {Rudy & Komodo11}) 13. Qf3 (13. Na3 b6 14. Qf3 g5 15. Bxf4 gxf4 16. Rad1 a6 $11 { Stockfish9}) 13... g5 14. Rd1 (14. Bxf4 {the N has to go.} g4 (14... exf4 15. e5 Qxe5 16. Na3 g4 17. hxg4 Qg5 18. Bf5 Bxf5 19. gxf5 Qxf5 $15 {Stockfish9}) 15. hxg4 exf4 16. Qh3 Rd8 17. e5 Qxe5 18. Na3 h6 19. Rad1 Be6 $15 {Komodo11}) 14... g4 $19 15. hxg4 Qh4+ 16. Kg1 Bxg4 17. Qg3 Ne2+ (17... Ne2+ 18. Kf1 Qh1#) 0-1 [Event "Dyfed League:Aberystwyth-Carmarthen"] [Site "?"] [Date "2018.05.16"] [Round "?"] [White "Van Kemenade, J."] [Black "Narayan-Taylor, R."] [Result "1/2-1/2"] [ECO "C50"] [WhiteElo "1740"] [BlackElo "1416"] [Annotator "Rudy"] [PlyCount "34"] 1. e4 e5 2. Nf3 d6 {Philidor} 3. Bc4 (3. d4 {main}) 3... Nc6 {now a Hungarian defence} (3... Be7) (3... h6) 4. O-O (4. d4) (4. c3) (4. d3) (4. Nc3) 4... Be7 (4... Bg4) 5. d3 (5. c3 {main}) (5. h3) (5. d4 Nf6 6. d5 Nb8 7. Bd3 Nbd7 8. c4 Nc5 9. Nc3 {Anand-Ivanchuk, Leuven GT blitz 2017,1/2-1/2 & it's become an Old Indian Defence to d4 beginning}) (5. a4 Nf6 6. d3 {is another GM line eg} Na5 7. Ba2 c5 8. Nc3 Nc6 9. Nd5 Nxd5 10. Bxd5 O-O 11. c3 {Howell-Hebden,GBR ch Torquay 2013,1/2-1/2}) 5... Na5 (5... Nf6) (5... Bg4 {main lines}) 6. Bb3 Nxb3 7. axb3 g5 $5 $146 {a side attack, because the centre is firm; which is where Wh should react} (7... Nf6 {main}) 8. Be3 $16 {Komodo11} (8. d4 {Rudy & Komodo11}) (8. Nc3 $16 {Komodo11}) 8... g4 9. Ne1 (9. Nfd2 Nf6 10. Nc3 Be6 11. f4 (11. Nc4 O-O 12. d4 $16) 11... exf4 12. Rxf4 Nh5 13. Rxg4 Qd7 14. Rg5 Bxg5 15. Bxg5 Bg4 16. Qe1 $14 {Komodo11}) 9... a6 10. Nc3 Nf6 (10... c5 11. f4 $16 { Wh gains pressure on the f file- the threat of an attack on the g file is not dangerous}) 11. d4 exd4 12. Bxd4 (12. Qxd4 c5 13. Qd1 $16 {is the position reached in the game}) 12... c5 13. Be3 $16 Bd7 (13... Be6 14. Nd3 Qd7 15. f4 gxf3 16. Qxf3 Rg8 17. Nd5 Bxd5 18. exd5 Qg4 19. c4 Kd7 20. Qf5+ Qxf5 21. Rxf5 Rg7 22. b4 $16 {Komodo11} Rag8 23. bxc5 Rxg2+ 24. Kh1 Re2 25. c6+ Kc7 26. Bg1 bxc6 27. dxc6 Kxc6 28. Rxa6+ Kd7 29. Ra7+ Ke8 30. b4 $16 {the B pawn is dangerous & the Bl pieces don't work in harmony}) 14. Nd3 Bc6 15. e5 (15. Re1 $16 {Komodo11; virtually forces} O-O {when} 16. b4 Kh8 17. bxc5 dxc5 18. Qe2 Qc7 19. Bf4 Qd7 20. Rad1 Qe6 21. Bg3 $16 {the Wh pieces are better coordinated} ) 15... dxe5 16. Nxe5 Qc7 (16... Qxd1 17. Raxd1 O-O 18. Nxc6 bxc6 19. Na4 $16 { Komodo11- the Bl pawn structure is a mess}) 17. Nxc6 (17. Nxg4 {Wh can take this pawn as Bl is in no position to take advantage of the g file, with his K still in the centre} Nxg4 (17... Rg8 18. Nxf6+ Bxf6 19. f3 $16) 18. Qxg4 h5 19. Qf5 Qd7 20. Qxd7+ Kxd7 21. Rad1+ Ke6 22. Na4 Bxa4 23. bxa4 $16) (17. Bf4 Bd6 18. Re1 O-O-O 19. Qd3 Rhe8 20. Qf5+ Nd7 21. Nxc6 Qxc6 22. Bxd6 Qxd6 23. Qxg4 $16 {Komodo11}) 17... Qxc6 {draw ? Gave the team a win} (17... Qxc6 18. Bh6 { prevents 0-0} (18. Bg5 {encourages 0-0} O-O 19. f3 $16) 18... Qd7 19. Qe2 O-O-O 20. Qe5 Rhe8 21. Bf4 Qd6 22. Qg5 Qe6 23. Rae1 h6 24. Qe5 Bd6 25. Qxe6+ Rxe6 26. Rxe6 fxe6 27. Bxh6 Rh8 28. Rd1 Bxh2+ 29. Kxh2 Rxh6+ 30. Kg3 Kc7 $14) 1/2-1/2

Wednesday, 16 May 2018

Champions

Aberystwyth are the new Dyfed League Champions, having clinched the title with a match to spare. We played Cardigan B at home on Tuesday 8th May, needing only 1½ points out of 4 for the Championship and achieved the result comfortably enough. On top board, Brendan-Budok Durand-Le Ludec took control against Tony Haigh's Trompowsky with a kingside advance that later gave him a passed pawn in the centre, after which things became so complicated that no one had much idea what was going on, not even Rudy with the benefit of digital hindsight. Eventually Brendan forced the win with a passed pawn on the queenside. In the battle of the Dutchmen, which was an Italian Game rather than a Dutch Defence, Rudy van Kemenade took advantage of his extra space for a quick attack on Awne Osinga's castled king which led to an early resignation by Black. Cardigan put up more resistance on the bottom two boards, where the Brewer brothers both achieved draws against higher-rated opponents. Adam Watkin-Jones used a lot of time against Ben Brewer, and offered a draw in a position where he perhaps had a slight advantage. Meanwhile, I was struggling against Joshua in a Vienna Game. My ponderous attack ground to a halt and I lost a pawn leaving me with an inferior bishop ending, which I managed to hold when Black couldn't find the most accurate line. 3-1 to Aberystwyth was more than enough for the title.

[Event "Dyfed League: Aberystwyth-CardiganB"] [Site "?"] [Date "2018.05.08"] [Round "?"] [White "Haigh, A."] [Black "Durand Le Ludec, Brendan"] [Result "0-1"] [ECO "A46"] [WhiteElo "1928"] [BlackElo "2183"] [Annotator "Rudy"] [PlyCount "90"] [EventDate "2018.05.09"] 1. d4 Nf6 2. Bg5 e6 3. e4 (3. c4 Be7 (3... Bb4+ 4. Nc3 Bxc3+ 5. bxc3 d6 6. e4 h6 7. Bxf6 Qxf6 8. Bd3 {Haigh-Buttell, Dyfed Closed 2017,1-0}) 4. Nc3 d5 { has been played a couple of times by Tony}) 3... h6 4. Bxf6 Qxf6 5. Nf3 (5. Nc3 {Main, gained Tony 2 wins & 3 draws in the past} g6 (5... Bb4 6. Qd3 d5 { Haigh_ Francis, Dyfed Closed 2007,1-0}) 6. Qd2 Bg7 7. O-O-O d6 8. e5 Qe7 9. f4 a6 {Haigh- G Rees, Dyfed- East Glamorgan 2004,1/2-1/2} (9... dxe5 10. fxe5 O-O {Haigh-Huw Jones, Dyfed Open 2015,1/2-1/2})) 5... d6 6. Bc4 {uncommon} (6. Nc3) (6. Bd3) (6. c3) (6. Nbd2) 6... g6 $146 (6... Nd7 {main} 7. Qe2 e5 8. c3 Be7 9. Nbd2 Nf8 10. Bb3 Ng6 11. g3 O-O 12. h4 Re8 13. O-O-O c6 {Conquest-Maharramzade, Ubeda op 1997,1/2-1/2}) (6... g5 {Komodo11}) 7. O-O Bg7 8. c3 O-O 9. Nbd2 (9. Re1 {transposes} Nc6 10. Nbd2 e5 11. d5 Ne7 12. Nf1 g5 13. Ne3 Qg6 14. Nd2 f5 15. exf5 Bxf5 16. h3 Qf7 17. Qe2 Ng6 18. Nxf5 Qxf5 19. Bd3 Qf7 20. Bxg6 Qxg6 21. Qe4 Qf7 {Wasiak-Gajewski, Poznan op 2016, draw agreed}) 9... e5 10. dxe5 dxe5 11. Qe2 a5 {Komodo11 initial choice, to stifle Wh's play on the Q side} 12. Rfd1 (12. a4) 12... a4 13. Nf1 Nd7 14. Ne3 c6 15. b4 Qe7 (15... axb3 16. axb3 Rxa1 17. Rxa1 b5 18. Bd3 Nc5 19. Bc2 Ne6 $15 {Komodo11 & Rudy; Stockfish9 considers it level , after intially going in for this line.} 20. g3 {creates horrible weaknesses around Wh's K} b4 $1 {Komodo11} 21. Ng4 (21. cxb4 Nd4 22. Nxd4 exd4 23. Nc4 d3 $19) 21... Qe7 22. Qe3 bxc3 23. Nxh6+ (23. Qxc3 Nd4 $19) 23... Bxh6 24. Qxh6 Nd4 25. Nxd4 exd4 $17 {Komodo11}) 16. Rd2 b5 {aggressive, but the b5 pawn may become a target} (16... Nf6 17. Bd3 Nh5 18. g3 {= Brendan & Komodo11}) 17. Bd3 Nb6 18. a3 $11 {but the Wh pieces are all bunched up & with little dynamism apart from a c4 break possibility. Hence Bl launces an attack on the K side} f5 {Stockfish9} (18... Be6 19. c4 Rac8 20. cxb5 c5 $1 21. bxc5 Rxc5 22. Rc2 Rfc8 23. Qe1 (23. Ne1 Bb3 24. Rxc5 Qxc5 25. Qb2 Qc3 26. Qxc3 Rxc3 $15) 23... Bf8 24. Rxc5 Rxc5 25. Qd2 Rc8 $15 {Komodo11- the extra b5 pawn gets in the way of Wh's pieces while the a3 pawn needs constant protection}) 19. Rc1 (19. c4 {Wh must follow the logic of his last few moves & try to break Bl's constriction attempts} f4 20. Nd1 bxc4 21. Bxc4+ Kh7 (21... Nxc4 22. Qxc4+ Be6 23. Qxc6 (23. Qc3) 23... Rfc8 24. Qd6 Qe8 25. Qd3 Rd8 26. Qe2 Rxd2 27. Qxd2 Rd8 28. Qe1 Qc6 29. Nc3 $14) 22. Nb2 Bg4 23. Rc2 c5 24. bxc5 Nxc4 25. Rxc4 Rfb8 26. Qc2 $16 (26. Nd3 $16 {both Komodo11})) 19... f4 $15 {now Bl gains the initiative} 20. Nf1 (20. Nd1 {reroutes to b2 to continue the fight for c4} Be6 21. Nb2 Rac8 22. c4 c5 $15 {Komodo11}) 20... Be6 $17 21. Rdc2 g5 {Stockfish9} ( 21... Bb3 22. Rd2 (22. Rb2 Nc4 23. Bxc4+ Bxc4 24. Qe1 Rad8 $17) 22... Rfc8 $17 {Komodo11}) (21... Nc4 $17) 22. N3d2 $11 {Komodo11 & Stockfish9} g4 {looks dangerous to a human eye, but Engines don't mind the odd tactic} (22... Rfd8 23. c4 c5 $11 {Komodo11}) (22... Rfc8 23. c4 c5 $11 {Stockfish9}) 23. g3 { to block the position & hope to cover against any attempts to get the Bl Q to h3.} (23. c4 $1 {is what Wh has been playing for & what Komodo11 insists must now be played} bxc4 (23... f3 24. Qe3 bxc4 25. Nxc4 fxg2 26. Ng3 Rf3 27. Qxb6 Rxd3 28. Ne3 Bd7 29. Ngf5 $18 {Komodo11}) 24. Nxc4 Nd7 (24... Nc8 25. g3 Na7 26. Na5 Bd7 27. Rd2 $16 {Stockfish9}) 25. Ncd2 Nb8 26. Bc4 h5 27. Bxe6+ Qxe6 28. Nc4 $14 (28. f3 Bf6 $14) 28... f3 {The Wh Ns are suddenly getting quite active as Bl#s pawn advances have lead to several weak squares} 29. Qd3 $16 { Komodo11}) 23... f3 {after some thought, but Komodo11 considers this pawn is better left for now ( it does control e3 against the Ns)} (23... Nc4 {given as winning by Stockfish9} 24. Bxc4 bxc4 25. Rd1 (25. Nxc4 f3 {wins a N}) 25... Qf7 26. Nb1 Bf6 27. Rd6 Rac8 28. Nbd2 Bg5 $15 {Komodo11}) 24. Qe3 Nc4 25. Bxc4 bxc4 26. h4 {keeps the Q away from h3, but Wh needs to be wary of Bl sacrificing a B on here at some later date} (26. Qb6 Qd7 27. Qc5 $11 {Komodo11}) (26. Qe1 Bf6 27. Ne3 Bg5 28. Rd1 Rad8 (28... Qf7 29. Ndf1 Rfc8 30. Rcd2 h5 31. Rd6 Be7 32. R6d2 Bg5 33. Rd6 $11 {Komodo11}) 29. Ndxc4 Rxd1 30. Qxd1 Qh7 $1 31. h4 gxh3 32. Qf1 (32. Qd6 Bxc4 33. Nxc4 Qxe4 34. Qe6+ Kh7 35. Rb2 Qe1+ 36. Kh2 Qf1 37. Qxh3 Qxc4 $19) 32... Bxc4 33. Nxc4 Qxe4 34. Rb2 Qd5 35. Rb1 Rd8 $17 {Komodo11}) 26... Rfd8 27. Qe1 (27. Qb6 Qd7 28. Nb1 Rab8 29. Qa5 Ra8 30. Qb6 Rdb8 31. Qc5 Qc7 32. Rd1 $11 {Komodo11} Bf8 $15 {Stockfish9}) 27... Qf7 28. Ne3 Rd3 (28... Kh7 {Komodo11}) 29. Qf1 {Wh keeps being too defensive with his Q according to Komodo11} (29. Nd1 h5 30. Nb2 Rdd8 31. Nf1 Bh6 32. Ne3 $11 {Komodo11} (32. Rd1 $11 {Stockfish9})) 29... Rad8 $17 30. Rd1 (30. Nb1 h5 31. Nd1 Qd7 (31... Bh6 32. Nb2 Qh7 33. Re1 Qa7 34. Nxd3 cxd3 35. Rb2 Bb3 36. Nd2 Bc2 $17 {Komodo11}) 32. Nb2 Bh6 33. Nxd3 cxd3 34. Rb2 Bb3 35. Nd2 Bc2 36. Qe1 $15 {Komodo11}) 30... h5 {considered as winning by Stockfish9 , who chooses the Komodo11 variation as second choice, thiugh also winning} (30... Qa7 $1 31. Qe1 Qd7 32. Nef1 h5 33. Ra1 Bh6 34. Raa2 c5 $19 {Komodo11- the trouble always is, with so many good moves available, to decide which is the best sequence to play them in.}) 31. Nb1 Bh6 32. Rcd2 Qd7 (32... Bxe3 $1 {Brendan wished afterwards that he had iunserted this move- the protected passed pawn will win endgames as it ties a piece down. Wh gains f2 , but the K position is just that little bit more insecure} 33. fxe3 Rxd2 (33... Rf8 34. Qf2 Bc8 $1 {Komodo11- Wh cannot risk opening the game because of his K position} 35. Kh2 (35. Rxd3 cxd3 36. Rxd3 Qb3 37. Nd2 Qxa3 38. Nf1 Ba6 39. Rd6 Qxc3 {and Wh's Q side has disintegrated}) 35... Ba6) 34. Rxd2 Rxd2 35. Nxd2 Qd7 36. Nb1 (36. Nxc4 Bxc4 37. Qxc4+ Kg7 38. Qa6 Qd1+ 39. Qf1 Qd2 40. Qf2 Qxc3 $19 {Wh can't protect both the Q side & the k }) 36... Kg7 37. Kf2 Bf7 (37... Qd3 38. Qxd3 cxd3 39. Nd2 {blockades}) 38. Ke1 Qd6 39. Nd2 c5 40. b5 (40. Nxc4 f2+ $19) 40... Qb6 41. Kf2 Qxb5 42. Qc1 Qd7 43. Qc2 Qd6 44. Ke1 Qd3 45. Qxd3 cxd3 46. c4 {and it shows up a major weakness in Engine analysis. Komodo11 ( & Stockfish9) insists that Bl has a decisive advantage. Humans can see quite quickly that despite 2 passed pawns, there is no way in for either the Bl K or B. So maybe this entire swapping off of the Rs leads}) 33. Rxd3 (33. Qe1 {Komodo11 initial idea to hold is useless} Bxe3 34. Rxd3 (34. fxe3 c5 $19) 34... Bxf2+ 35. Kxf2 cxd3 36. Qe3 Kh7 $17) 33... cxd3 34. Qe1 c5 {(Stockfish 9 likewise)} (34... Bb3 35. Nf5 (35. Rd2 Bc2 36. c4 Bxb1 37. Qxb1 Bxe3 38. fxe3 f2+ 39. Kg2 (39. Kxf2 Qf7+ 40. Kg1 Qxc4 $19) 39... Qh7 $19 {Komodo11}) 35... Qe6 36. Nd2 Bxd1 37. Qxd1 Kf7 $19 {Komodo11}) 35. Nd2 (35. bxc5 {looks like it would have been Wh's last attempt to hold the game ( but only after seeing all the analysis that follows!)} Bb3 36. Nd5 Kg7 37. Rxd3 Bc2 (37... Qb5 38. Rd2 Qxc5 (38... Bxd2 39. Qxd2 Bxd5 40. Qg5+ Kf7 41. Nd2 Be6 42. Qxd8 Qxc5 43. Qg5 Qxa3 44. Qxe5 $11) 39. Ne3 Rxd2 40. Nxd2 Bxe3 41. Qxe3 Qxe3 42. fxe3 Kf6 {is another Engine misjudgement- Wh just moves his K to f2 repeatedly, and there is no Bl entry}) 38. Rd2 (38. c6 Qxc6 39. Ne7 Rxd3 40. Nxc6 Rd1 41. Qxd1 Bxd1 42. c4 Bc1 43. Nb4 Bb2 44. c5 Kf7 $17 {the Bs dominate the board ( Bs can lose a move & keep their position intact, Ns can't) & the Bl K enters}) 38... Bxd2 39. Nxd2 Bxe4 40. Nxe4 Qxd5 41. Qe3 Kf7 42. Kh2 $11 { Komodo11- Queen & N together are a powerful combination While Rs are bad defenders as they clog up their Ks escape squares}) 35... Qc6 (35... cxb4 36. cxb4 Rc8 37. Ndf1 Qd4 38. Qd2 Rc3 39. b5 Rxa3 40. Qa5 $11 {perhaps, Wh has chances with his B pawn}) 36. c4 (36. Nd5 Bxd5 (36... Kh7 37. b5 $1 (37. bxc5 Qxc5 38. Nf1 Qxa3 39. Rxd3 Rb8 $17 {looks fine for Bl, the a pawn is a menace}) 37... Qxb5 38. Rb1 Qc6 39. c4 $11 {here Komodo11 considers that Bl should give up an exchange to persuade Wh to give up that powerful N on d5 ( likewise Stockfish9)} Rd7 (39... Bxd5 40. exd5 Qg6 41. Ne4 $14 {the other N is now we; llplaced}) 40. Nf6+ Kg6 41. Nxd7 Qxd7 42. Rb6 Kf6 $11) 37. b5 Qxb5 38. exd5 c4 39. Qe4 Qxd5 40. Qg6+ Bg7 41. Ne4 $11 {Komodo11- another variation where Komodo11 changes its judgement several times over}) 36... cxb4 37. Nd5 Qc5 ( 37... Kf7 38. Nxb4 Qb6 (38... Qc5 39. Nxf3 gxf3 40. Nxd3 Qf8 41. Nxe5+ Kg8 42. Nxf3 Rxd1 43. Qxd1 Qxa3 44. Ng5 Bxg5 45. hxg5 Bxc4 $17 {yet another extremely complex line , impossible to calculate or evaluate.}) 39. Rc1 Qc5 40. Qd1 Rd7 41. Rc3 Be3 42. Qe1 Bd4 43. Rxd3 Kg8 44. Nd5 $11 {and yet another from Komodo11 }) 38. axb4 $14 {it looks as if these 2 connected pawns give Wh some chances} Qd4 (38... Qa7 {initial idea Komodo11, before it finds} 39. Qf1 $16 {and then keeps swithching evaluations several times more}) 39. Ne3 {missing a chance} ( 39. Ne7+ Kg7 40. Nc6 Qb6 41. Nxd8 Qxd8 42. b5 $16 {Komodo11}) 39... Ra8 $19 { Komodo11 second choice} (39... a3 40. b5 a2 $19 {Komodo11 first}) (39... Bxe3 40. Qxe3 Qxe3 41. fxe3 Rc8 42. b5 (42. Ra1 Bxc4 43. Rxa4 Bb5 44. Ra5 Rc2 $19 { Komodo11}) 42... Bxc4 43. Nxc4 Rxc4 44. Rxd3 Kf7 $19 {Komodo11 3rd choice}) 40. Nf5 (40. Nd5 a3 41. Nc7 a2 42. Nxa8 Qc3 43. Nb6 Bxd2 44. Qf1 Qd4 45. b5 Bc3 46. Nd5 Bxd5 47. cxd5 Kf7 48. b6 Qxb6 49. Qxd3 a1=Q $19 {another magical mystery tour from Komodo11}) 40... Bxf5 41. exf5 a3 42. Qe4 (42. Nb3 d2 43. Nxd2 Rd8 $19 {Komodo11}) 42... Qxe4 43. Nxe4 a2 (43... d2 44. Ra1 a2 45. Nc3 Bg7 46. Ne4 d1=Q+ 47. Rxd1 a1=Q {is another way to end things}) 44. Ra1 Bc1 $1 45. Nc3 Bb2 {a neat ending, A very tough struggle for both players, & this commentator is still bemused as to what was 'really' going on.} 0-1 [Event "Dyfed League: Aberystwyth-CardiganB"] [Site "?"] [Date "2018.05.08"] [Round "?"] [White "Van Kemenade, R."] [Black "Osinga, Awne"] [Result "1-0"] [ECO "C50"] [WhiteElo "2015"] [BlackElo "1361"] [Annotator "Rudy"] [PlyCount "35"] [EventDate "2018.05.09"] 1. e4 e5 2. Nf3 Nc6 3. Bc4 {apparently Awne has not faced this move before, though he has played it on the Wh side.} h6 {preventing a Ng5 but falling behind in development , so Wh is able to open up the centre rapidly} (3... Bc5) (3... Nf6 {main lines}) 4. d4 {78% for Wh} (4. Nc3 Nf6 5. a3 Bc5 6. b4 Bb6 7. O-O d6 8. h3 Nh5 9. d3 Nd4 $2 10. Nxe5 $18 {Osinga-Greenwood, Dyfed League 2017,1-0} (10. Nxd4 $1 exd4 11. Qxh5 {threatens mate})) (4. O-O {main 67% for Wh}) 4... exd4 5. Nxd4 Ne5 {Interestingly this position can also occur from a Scotch Gambit 3.d4, exd4 5.Bc4, h6 6.Nxd4 , Ne5} (5... Nxd4 6. Qxd4 {brings Wh's Q into a powerful central position} Qf6 7. e5 Qg6 8. O-O {82 % for Wh} Qxc2 $2 9. Nc3 Qg6 10. Nb5 Qc6 11. Qf4 f6 12. exf6 Qxf6 13. Re1+ Be7 14. Nxc7+ {Poetsch-Firinci, Main Vogelsberg op 2010,1-0}) 6. Bb3 {71 % for Wh} (6. Be2 { less frequent, but preserves the B and scores 95% for Wh}) 6... Nf6 7. f4 { scores best at 87%} (7. O-O {72%}) (7. Nc3 {60% main lines}) 7... Ng6 (7... Nc6 8. e5 $16 (8. Nxc6 bxc6 $16 {also played})) 8. e5 $18 {Stockfish9} Ne4 (8... Nh7 9. O-O (9. Qd3 $18 {Stockfish9}) 9... Bc5 10. Kh1 O-O 11. Nc3 a6 12. Ne4 Be7 13. Nf5 Bb4 14. c3 (14. Nxg7 Kxg7 15. f5 Nxe5 16. f6+ $18 {Stockfish9}) 14... Ba5 15. Qd5 $18 {Kouliouras-Mavroudis, Petroupoli op 2007,1-0}) (8... Qe7 9. Nf5 (9. O-O $18) 9... Qb4+ 10. Nc3 Ne4 11. Bxf7+ (11. Qd5 $18 {Stockfish9}) 11... Kxf7 12. Qd5+ Ke8 13. Qxe4 Qxe4+ 14. Nxe4 d5 15. Neg3 $16 { Fredriksen-Johansen, Fredrikstad CC ch 2003,1-0}) 9. Qf3 $146 {not the best, but in the alternatives played, the player totally lost in the opening managed to win instead!} (9. Qe2 $2 Qh4+ 10. g3 Nxg3 $19 11. Qf2 Nxh1 12. Qxh4 Nxh4 13. Nc3 Bc5 14. Ndb5 Bb6 15. Nd5 Kd8 $19 {Lopez Guarin-Ossa Ramirez, Medellin Aristizabal Cup, 2017, 1-0! when Bl somehow got mated on move 26}) (9. Bd5 { considered} Nc5 (9... Qh4+ 10. g3 Nxg3 11. hxg3 {the R is protected} Qxg3+ 12. Kf1 $16) 10. Qe2 Qe7 11. Nf5 Qd8 12. Qb5 (12. Nc3 $18 {Stockfish9}) 12... Ne6 ( 12... c6 $19) 13. Nd4 Qe7 (13... c6 $19 {Stockfish9}) (13... Nxd4 $19 { Stockfish9}) 14. Nf5 Qb4+ $11 {Reis-Moreira,Aveiro Campeoes 2001,1-0}) (9. O-O $18 {Stockfish9} Nc5 10. Nc3 (10. Bxf7+ Kxf7 11. Qh5 d6 12. f5 $18 {Stockfish9} ) (10. Qe2 Nxb3 11. Nxb3 Nh4 12. f5 $18 {Stockfish9}) 10... Nxb3 11. axb3 Bc5 12. Ne4 (12. b4 Bb6 13. Nd5 d6 14. Nxb6 cxb6 15. Nb5 $18 {Stockfish9}) 12... Bb6 13. c4 d6 14. exd6 cxd6 15. Kh1 (15. f5 Ne5 16. f6 $16) 15... O-O 16. Nb5 d5 $14 {Danada-Zborek, Oravska Priehrada op 2016,0-1}) 9... Nc5 (9... d5 { Stockfish9- gains space in the centre} 10. exd6 Nxd6 11. O-O Be7 12. Nc3 O-O $11) 10. O-O (10. Nc3 Nxb3 11. axb3 $16 (11. Nxb3 $16)) 10... Nxb3 11. axb3 ( 11. Nxb3 {prevents Bc5, but Wh preferred an active N} d5) 11... Bc5 (11... d5 12. f5 Nxe5 13. Re1 Bd6 14. Bf4 f6 15. Qxd5 $16 {Stockfish9}) 12. Be3 Bxd4 { the N is menacing, but swapping off pieces very often just brings other pieces further forward. Let the other person do the swapping instead is frequently a better policy.} (12... O-O 13. Nc3 d6 14. exd6 Bxd6 15. Ndb5 Re8 16. Rfd1 $14 { Stockfish9 & pm analysis}) 13. Bxd4 O-O $2 {with the e pawn protected, the Wh centre threatens to roll forward} (13... Nh4 14. Qg4 O-O 15. f5 d5 16. Nc3 g6 { at least tries to hold up the advance, thoug Wh retains an advantage with} 17. e6 Nxf5 18. Rxf5 Bxe6 19. Raf1 Qd6 20. h3 $18 (20. Rxf7 Rxf7 (20... Bxg4 21. Rg7+ Kh8 22. Rxg6+ Kh7 23. Rg7+ Kh8 24. Rxg4+ Kh7 25. Rg7+ Kh8 {and Wh can remove all of Bl's Q side pawns before reaining the Q with this Windmill effect }) 21. Qxg6+ Kf8 22. Qxh6+ Ke7 23. Nb5 Qc6 24. Re1 Kd7 25. Nxc7 Kxc7 26. Rxe6 $16 {Stockfish9}) 20... Rae8 21. Rf6 Bxg4 22. Rxd6 cxd6 23. Nxd5 f5 24. hxg4 $18 {Stockfish9}) 14. f5 Nh8 {return to the backrank} (14... Nh4 {worth a try} 15. Qg3 d6 16. exd6 Qg5 17. Qxg5 hxg5 18. dxc7 Bxf5 19. g3 Bh3 20. gxh4 Bxf1 21. Kxf1 Rac8 22. Be5 Rfe8 23. Ra5 b6 24. Rd5 $18 {Stockfish9}) 15. f6 $18 { the K side falls apart} g6 (15... g5 16. h4) 16. Qh3 (16. Be3 Kh7 (16... Re8 { Rudy & Stockfish9 holds out longer, but Bl's K side is too weak} 17. Qg3 g5 18. Bxg5 Ng6 19. Bf4 (19. Bxh6) 19... d6 20. Nc3 dxe5 21. Be3 (21. Bxh6 Qd4+ 22. Be3 Qg4 23. Nb5 $18) 21... Re6 22. h4 h5 23. Qg5 Rd6 24. Ne4 $18 {Stockfish9}) 17. Bxh6 $18 {Julie} d5 18. Ra4 d4 19. Qe4 Qd7 20. Bg7 Qg4 21. Rf4 Qh5 22. Rh4 $18 {Stockfish9}) 16... Kh7 (16... h5 17. Qe3 Kh7 18. Qg5 $18) 17. Be3 h5 18. Qg3 {and Bl resigned, though he can hold out a little longer} (18. Qg3 Rg8 19. Qg5 Qf8 20. Ra4 $1 {pm analysis} (20. g4 d6 21. h3 (21. Kh1 Bxg4 22. Ra4 Re8 23. Rxg4 (23. Bf4 $16) 23... Rxe5 $17 {holds everything}) 21... Bd7 22. Kh2 Re8 23. Bf4 Rxe5 24. Bxe5 dxe5 25. Nc3 $18) 20... b6 21. Rh4 Rg7 22. Rd1 $18 { Stockfish9, Bl remains tied down}) (18. g4 d6 19. Rf5 {considered by Wh, but then Bl can win by} Bxf5 20. gxf5 Re8 {as the g pawn has gone.}) (18. Rf5 $1 { is the most elegant conclusion, but, in typical l'esprit de escalier fashion ( one always finds the best reply while on the staircase on the way out) this only came to Rudy on the drive back home. Interesting that Stockfish9 did.nt see it coming earlier than the last move.} d6 19. Rxh5+ gxh5 20. Qxh5+ Kg8 21. Qh6 Qxf6 22. exf6 Ng6 23. Qg7#) 1-0 [Event "Dyfed League: Aberystwyth-Cardigan B"] [Site "?"] [Date "2018.05.08"] [Round "?"] [White "Brewer, Ben"] [Black "Watkin-Jones, A."] [Result "1/2-1/2"] [ECO "A37"] [WhiteElo "1364"] [BlackElo "1957"] [Annotator "Rudy"] [PlyCount "44"] [EventDate "2018.05.09"] 1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. g3 (4. e3 {alternative}) 4... Bg7 5. Bg2 e5 ( 5... e6 {also}) 6. O-O Nge7 7. d3 d6 8. Rb1 O-O 9. a3 Rb8 {we are still in top GM territory} (9... a5 {main} 10. Ne1 Be6 11. Nc2) (9... f5 10. Bd2 (10. Bg5 h6 ) 10... h6) 10. b4 Be6 {uncommon, & feels premature because of Wh's reply} ( 10... b6 11. Ne1 Be6 {main}) (10... h6 {Rudy, next} 11. Ne1 Be6 (11... f5)) 11. Ng5 Bf5 {the B doesnt really belong on this square} (11... Qd7 12. Nxe6 Qxe6 { 3-0} 13. Qa4 Qd7 14. Bg5 f6 15. Be3 b6 16. Nd5 b5 17. cxb5 Nd4 18. bxc5 dxc5 19. Bxd4 cxd4 20. Qc4 Kh8 21. Qc7 {Narciso Dublan-Pozanco Romasata, Sabadell op 2011,1-0}) (11... Bc8 12. Nd5 h6 13. Ne4 f5 14. Nec3 Nxd5 15. Bxd5+ Kh7 16. bxc5 Ne7 17. c6 bxc6 18. Rxb8 cxd5 19. Nxd5 {Bertaccini-Garcia, Buenos Aures Duchamp op 2011,1-0}) 12. Nd5 (12. b5 Nd4 13. e3 Ne6 14. Nxh7 Kxh7 15. e4 Bxe4 16. Bxe4 $14 {Komodo11}) 12... f6 $6 {weakens further wh squares} (12... cxb4 13. axb4 Nxd5 14. Bxd5 h6 15. Ne4 Ne7 16. Nc3 Nxd5 17. Nxd5 Bh3 (17... Be6 18. Qa4 $14) 18. Re1 Be6 19. Qa4 Ra8 20. Qb5 b6 21. Bd2 f5 22. f3 Kh7 $11 {Komodo11 }) (12... h6 13. Ne4 cxb4 14. Nxe7+ Nxe7 15. axb4 d5 16. cxd5 Nxd5 17. Qb3 Nc7 18. b5 $14 {Komodo11- Bl has difficulty finding good squares for his oieces}) 13. Nxe7+ (13. Ne4 b6 14. b5 Nd4 15. e3 Ne6 16. g4 Bxe4 17. dxe4 Nxd5 18. Qxd5 $16 (18. exd5 Ng5 19. f4 $14 {Komodo11})) 13... Nxe7 (13... Qxe7 14. Ne4 Bg4 15. h3 Be6 16. bxc5 dxc5 17. Qa4 $14 {Komodo11}) 14. Ne4 b6 (14... Bg4) (14... Be6) 15. f4 (15. Qa4 Qc7 16. Nc3 Qd7 17. Qxd7 Bxd7 18. bxc5 dxc5 19. Nb5 Bxb5 20. Rxb5 $16 {Bl's B is still hemmed in}) 15... Qd7 (15... Bg4 $11 16. Nxf6+ Bxf6 17. Bc6 exf4 18. Rxf4 Bd4+ 19. Rxd4 (19. Kg2 Bxe2 $15) 19... cxd4 20. Bh6 Rf5 21. Qd2) 16. Bd2 Rbd8 (16... exf4 17. Bxf4) 17. Nc3 Bh3 18. Nd5 (18. Bxh3 $1 Qxh3 19. fxe5 fxe5 20. Bg5 Nf5 21. Rxf5 Qxf5 22. Bxd8 Rxd8 23. Kg2 Rf8 24. Ne4 $16 {Bl is left with a bad B against the N}) 18... Bxg2 19. Nxe7+ (19. Kxg2 Nxd5 20. cxd5 exf4 21. Bxf4 Rde8 22. bxc5 bxc5 23. Qc2 f5 $15) 19... Qxe7 20. Kxg2 f5 21. fxe5 Bxe5 (21... dxe5 $15 {unbalances the pawn structure, which normally gives chances to the higher -rated player}) 22. e3 {restricting the Bl B, although also his owm. Wh was converned about being able to protect e2} Rfe8 {(draw?) running short of time} (22... Qe6 $1 23. Qf3 d5 $15 {Komodo11} 24. bxc5 bxc5 25. cxd5 Qxd5 26. Qxd5+ Rxd5 27. e4 Rxd3 28. Bh6 Rf6 29. Bg5 Rf7 30. exf5 Rxf5 31. Rxf5 gxf5 32. Rf1 Kf7 (32... Rxa3 33. Rxf5 Ra2+ 34. Kf3 Bd4 35. Rd5 Rf2+ 36. Ke4 Re2+ 37. Kd3 Rxh2 38. Rd7 a5 39. Bf4 Ra2 40. Ke4 a4 41. Ra7 a3 42. Kd5 h5 43. Bc1 Bb2 44. Bxb2 axb2 45. Rb7 Ra3 46. Kxc5 Rxg3 47. Rxb2 $11) 33. Rxf5+ Ke6 34. Rf3 c4 35. a4 Rxf3 36. Kxf3 Kd5 37. Ke3 Bd4+ 38. Kd2 Ke4 $19 {Komodo11- Bl penetrates to the K side}) 1/2-1/2 [Event "Dyfed League:Aberystwyth-Cardigan B"] [Site "?"] [Date "2018.05.08"] [Round "?"] [White "Francis, Matthew"] [Black "Brewer, Joshua"] [Result "1/2-1/2"] [ECO "C30"] [WhiteElo "1762"] [BlackElo "1417"] [Annotator "Rudy"] [PlyCount "74"] [EventDate "2018.05.09"] 1. e4 e5 2. Nc3 Nf6 3. f4 d6 {rather passive & not discussed in any theory books} (3... d5 {challenges the centre}) 4. Nf3 Nc6 (4... Be7 5. Bc4 (5. fxe5 dxe5 6. Nxe5 Nxe4 {but 3.5-0.5}) 5... O-O 6. d3 Nbd7 7. a4 c6 { Hector-Danielsen, Copenhagen Challenge Ballerup April 2018,1/2-1/2}) 5. Bb5 (5. Bc4 {alternative}) 5... Bd7 6. d3 (6. O-O) 6... Nd4 (6... exf4 7. Bxf4 Be7 8. O-O {72% for Wh} (8. Qd2 {80% for Wh})) 7. Bxd7+ Nxd7 (7... Qxd7 8. O-O Nxf3+ 9. Qxf3 O-O-O 10. fxe5 dxe5 11. Bg5 Be7 12. Bxf6 Qd4+ 13. Kh1 Bxf6 14. Nd5 Rd6 15. Qg4+ Kb8 16. Nxf6 Rxf6 17. Qxg7 Rxf1+ 18. Rxf1 Rc8 {Spice-Trevelyan, Jersey op, St Helier 2005,1/2-1/2}) 8. O-O (8. Be3 {4-0}) 8... Be7 (8... g6 9. Be3 Bg7 10. Bxd4 exd4 11. Ne2 c5 12. Ng3 O-O 13. Ng5 d5 14. e5 Nxe5 { Tobar-Nagel, Bayern ch women, Bad Koenigshofen 2000,0-1}) 9. Ne2 $146 (9. Nxd4 exd4 10. Ne2 Bf6 (10... c5 11. c3 $14 {Stockfish9} (11. Ng3 O-O 12. Nf5 g6 13. Nxe7+ Qxe7 14. f5 {Medunova-Rulfova, Czechia op women 2003,1-0}) 11... dxc3 12. bxc3 O-O 13. d4 {Beckmann-Dieckmann, OWL ch U18, Hiddenhausen 2005,1-0} (13. g4 g6 14. Rb1 Rb8 15. Ng3 Bf6 16. Bd2 b5 17. g5 Bg7 18. Qg4 Re8 19. h4 a5 20. a3 Rb7 21. h5 {Moskwinski-Olejarczyk, Warsaw YMCA Winter op 2007,1-0})) 11. Ng3 g6 12. Qf3 Bg7 13. Bd2 Qe7 14. Rae1 O-O-O 15. a4 {Wozniak-Zyla, Polonia op, Wroclaw 2007,1-0}) 9... Nxf3+ 10. Rxf3 exf4 11. Nxf4 (11. Bxf4 O-O 12. Ng3 (12. Nd4 g6 13. Rh3 Bf6 14. Nf5 Bxb2 15. Rb1 Be5 16. Qg4 Kh8 17. Be3 Nf6 18. Qh4 Nh5 19. Qf2 c5 20. Bh6 Ng7 21. Ne3 Qd7 $11 {Stockfish9}) 12... Ne5 13. Rf1 Qd7 14. Nf5 Bf6 15. Qh5 g6 (15... Kh8 16. Bxe5 Bxe5 17. d4 g6 18. Qh6 Qe6 19. dxe5 gxf5 20. Qxe6 fxe6 21. exf5 exf5 22. exd6 cxd6 23. Rae1 $16 {Stockfish9several Bl pawns are isolated & vulnerable})) 11... Ne5 (11... O-O 12. Nd5 c6 13. Ne3 Re8 14. Rh3 g6 15. Qf3 Bg5 16. Qg3 Re6 17. c3 $11 {Stockfish9, but Bl still has to be careful about his K side}) (11... c6 12. Nh5 O-O 13. Rg3 g6 14. Bh6 Re8 15. Qf3 Bf6 16. c3 Re6 17. Rf1 Kh8 18. Qg4 Qe7 19. Nxf6 Rxf6 20. Rxf6 Nxf6 21. Bg5 Kg7 22. Qh4 Qe6 23. c4 $14 {Stockfish9}) 12. Rf1 {why retreat a well placed piece? Later the R retuns to the 3rd rank} (12. Rh3 $14) (12. Rg3 $14) 12... c6 $11 (12... O-O $11) 13. d4 Ng6 14. Qf3 {has a one move threat to f7, but allows further simplification} (14. Nh5 O-O 15. Qe2 {The N may get to f5 via g3 & Wh can double on the f file , mabe even go Rf3-h3 with Qh5 forcing h6 which Wh might be able to scrifice upon. Bl will need to play a patient defence.}) 14... Nxf4 15. Qxf4 (15. Bxf4 {is a naturakl developing move, Here the Q gets in the way of both the B & the R. The B especially leads an unhappy life from now on, ( though in the end its survival allows Wh to survive a lost ending)}) 15... O-O 16. Bd2 b6 {a slightly odd move that weakens Bl's Q side pawn position- Ba5 is no real threat} (16... Bf6 17. c3 c5 $11 {Stockfish9}) 17. Rf3 (17. Rae1) 17... h6 18. Qg4 Bg5 19. Be1 {keeping pieces on for the attack, but the B is awkwardly placed here} (19. Bc3 {threat d5 & h4} d5 20. e5 Qe7 21. Raf1 Qe6 $11) (19. Rg3 Qf6 20. Bxg5 hxg5 21. c3 Rae8 22. Rf1 Qh6 23. Qf5 Qh4 24. e5 dxe5 25. dxe5 f6 26. e6 Qh7 27. Qg4 Re7 28. Qe2 Rfe8 29. Re3 f5 30. Re5 Qg6 31. Re1 Qf6 $11 {Stockfish9}) 19... Qe7 (19... Re8 20. Bg3 Qc8 21. Qxc8 Raxc8 22. Re1 d5 23. e5 c5 24. dxc5 bxc5 25. Ra3 Rc7 26. e6 Rb7 $11 { Stockfish9}) 20. h4 {drives the B but now Wh has to take care not to lose this pawn} (20. Bf2 Rfe8 21. Re1 Qe6 22. Qxe6 Rxe6 23. d5 cxd5 24. exd5 Rxe1+ 25. Bxe1 Rc8 26. Rc3 Rxc3 27. Bxc3 f5 $11 {Stockfish9- Wh is no longer getting any real attacking chances on the K side}) 20... Bf6 21. c3 Rae8 22. Re3 c5 23. Rd1 (23. d5 $11) (23. e5 {almost works, but has a flaw} dxe5 24. dxe5 Bxe5 25. Bg3 {ganging up on e5, but it can move} Bd4 $1 26. cxd4 Qxe3+ $19) 23... Qe6 24. Qxe6 Rxe6 25. Bg3 (25. dxc5 dxc5 26. Rd7 a6 27. g3 Rfe8 28. Kf2 Rxe4 29. Rxe4 Rxe4 30. Ra7 a5 31. Rb7 Re6 32. Bd2 {with an active R, Wh has some survival chances}) (25. d5 Re7 26. Bf2 (26. Rd2 Rfe8 27. Rde2 h5 28. Bg3 Be5 29. Bxe5 Rxe5 30. c4 g6 31. Kf2 Kg7 $15 {but insufficient to win for Bl}) 26... Rfe8 27. Rde1 h5 28. a4 Kh7 29. Kh2 Be5+ 30. g3 g6 31. Kg2 a6 32. Kf3 {and Wh is clinging on with inferior pieces- Bl has chances to open up other avenues of attack to try for a win}) 25... Rfe8 (25... cxd4 $1 {Stockfish9- improves the position for Bl} 26. cxd4 Rfe8 27. d5 Rxe4 28. Rxe4 Rxe4 29. Bxd6 Rxh4 (29... Bxb2 30. Kf2 Rxh4 31. Bb8 Kf8 (31... a6 32. d6 Rd4 33. Rxd4 Bxd4+ 34. Kf3 Kf8 35. Ke4 Bf6 36. Kd5 Ke8 37. Kc6 Bd8 38. d7+ Ke7 39. Bd6+ Ke6 40. Bf8 g6 41. Bxh6 b5 42. Bf4 f5 43. Bc7 Ke7 44. Be5 $11 {an advanced K is usually worth a pawn in most endgames}) 32. d6 Rd4 33. Rxd4 Bxd4+ 34. Kf3 Bf6 35. d7 Ke7 36. Bxa7 b5 37. Ke4 Kxd7 $19) 30. b3 Rd4 31. Rxd4 Bxd4+ 32. Kf1 Bc5 33. Bb8 a6 { and the d pawn is not a danger though the Bl K side wing advance is winning} 34. g4 Kf8 35. Be5 g6 36. Bf6 Ke8 37. Kg2 Kd7 38. Kf3 Be7 39. Bc3 Bg5 40. Ke4 h5 41. gxh5 gxh5 42. Kf5 Bh4 43. Kf4 Kd6 44. Ke4 Be7 45. Bd4 Bd8 46. Bb2 h4 47. Ba3+ Kd7 48. Kf3 Be7 49. Bb2 Bc5 50. Bf6 h3 51. Kg3 Kd6 52. Kxh3 Kxd5 {& Bl gets access to the Q side pawns}) 26. d5 Rxe4 27. Rxe4 Rxe4 28. Re1 {accepting to playing an ending simply a pawn down} (28. Bxd6 {Rudy & Stockfish9 had to be tried- the point is that Wh gets a dangerous pawn with the R already behind it.} Bxh4 (28... Re2 {wiping out Wh's Q side was what Wh was afraid of, but in endings it's often not the number of pawns but where they are ( how advanced) that matters} 29. Bc7 Rxb2 30. d6 Rxa2 31. d7 Bxh4 32. d8=Q+ Bxd8 33. Rxd8+ Kh7 {Bl has 4 pawns for the B, but they are too far back & vulnerable to be a threat, but just enough to make life m a little complex for both sides.} 34. Rd7 f6 (34... Kg6 35. Bb8 a5 36. Ba7 a4 37. Bxb6 Ra1+ 38. Kf2 c4 39. Rd6+ f6 40. Bd4 a3 41. Rd5 Rb1 42. Ra5 Rb2+ 43. Kf3 a2 44. g4 $11 {Stockfish9}) 35. c4 Rc2 36. Bd8 a6 37. Bxb6 Rxc4 38. Ra7 h5 39. Rxa6 h4 40. Ra5 g5 41. Bxc5 Kg6 $11 {Stockfish9- neither side has a decisive break}) 29. Bc7 Re8 (29... Re1+ $2 30. Rxe1 Bxe1 31. Kf1 $1 (31. d6 Bg3 32. Bb8 Bh4 33. Bxa7 Bd8 34. Kf2 $11) 31... Bh4 32. d6 Bg3 33. Ke2 (33. Bb8 f5 34. d7 Bh4 35. Bc7 Kf7 36. d8=Q $18) 33... f5 34. Kf3 Be5 35. Bb8 Kf7 36. d7 Bf6 37. Bc7 Ke6 38. d8=Q Bxd8 39. Bxd8 $18)) 28... Rxe1+ 29. Bxe1 Be5 (29... h5 30. Bg3 Be5 31. Bxe5 dxe5 32. c4 {is Stockfish9 first idea, but it's terrible. Ceding Wh a protected passed pawnand only getting one in return means that it will be equal}) 30. Kf1 f5 {The usual rule for a pawn advance is - candidate ( for Queening) first. However one needs to keep the entire structure sound as well.The text allows Wh a chance to hold up the pawn mass} (30... g5 {Rudy, keeps the pawns together as then h5 in return is too risky} 31. Bd2 f6 32. h5 Kf7 33. a4 f5 34. Ke2 Kf6 35. Kf3 g4+ 36. Kf2 f4 $19 {Stockfish9}) (30... h5 {Stockfish9- keeps the pawn a target on h4} 31. Ke2 Kh7 32. Kf3 Kg6 33. Ke4 b5 34. Bf2 (34. g3 {restricts the Wh B} a5 35. Bf2 c4 36. Be1 a4 {removing targets for the Wh B, while keeping b2 one for Bl.} 37. a3 Kf6 38. Bf2 g5 39. hxg5+ Kxg5 40. Kf3 Kf5 41. Be3 Bf6 42. Bf4 Be7 43. Be3 Bg5 44. Bb6 Bc1 45. Ba5 Bxb2 46. Bb4 Ke5 {and the d pawn drops- very careful & patient play by Stockfish9}) (34. b3 c4 35. bxc4 bxc4 36. Bd2 f5+ 37. Kf3 a6 {though shows up the flaws in Engine deliberations- although Stockfish9 claims a decisive advantage for Bl, a human eye can see there is no way in for Bl. The only target is the Wh a pawn and the Wh K will hold that while the B holds both the c & h. pawns.Even getting in g5 wont work either - if the Wh K is on the Q side it also supports c3, so releases the Wh B from one duty. There is no sign of any progress in the long line of subsequent Engine analysis.The analysis goes on for some 30 moves, with some very obscure moves that Iolo might appreciate, but Rudy can't find a clear answer to it.}) 34... a5 35. Be1 a4 36. a3 Kf6 37. Bd2 Bg3 38. Bg5+ Kg6 39. Kf3 f6 40. Be3 Bxh4 $19) 31. Ke2 (31. h5 {aims to split Bl's K side majority. It looks as if the pawn may be get lost, but a timely B move on Wh's part prevents the Bl k from getting to g5} Kf7 32. Ke2 Kf6 (32... f4 33. Bh4) 33. Bh4+ g5 34. hxg6+ Kxg6 35. Be1 Kh5 36. Kf3 b5 37. Bf2 a6 38. Be1 Kg5 39. Bd2+ {and Bl is making no headway}) 31... Kf7 (31... g6) 32. Kf3 (32. h5) 32... g5 33. hxg5 hxg5 34. Bd2 Kg6 {makes life more complicated} (34... g4+ $1 35. Ke3 Kg6 36. Be1 Kg5 37. a4 c4 38. Bf2 g3 39. Bg1 Kg4 40. Ke2 Kf4 41. Kf1 Ke4 {Rudy} (41... Kg4 42. Ke2 f4 43. Kf1 f3 44. Be3 f2 45. Bh6 Kf5 46. Ke2 Ke4 {Stockfish9}) 42. Ke2 f4 43. Kf1 Kxd5 44. Ke2 Ke4 {and either the Stockfish9 method of f3- f2 or the advance of the d pawn}) 35. g4 {in positions like these one needs to talk to one's pieces and ask them where they want to be- Rowson. The Bl K would like to be on c2, but thats a long way down the line. e5 though is a good square, where it attacks the d pawn , forcing another pawn onto a colour that the B can't defend. What is needed is a rearrangment of the Bl pieces- the B needs to vacate the square, & also be ready to temporarily defend g5 until at a suitable point this outside pawn is sacrificed to let the K into the mass of pawns on the othe side( c2 or b1 beckon) So.} fxg4+ $2 {the win is gone by letting the Wh K barricade} (35... Bg7 $1 {Rudy suggestion in pm analysis} 36. Bc1 (36. gxf5+ Kxf5 {Bl gets the opposition & easy access to e5}) 36... b5 ( 36... Kf6 37. Bd2 Bh6 38. c4 {& the B gains c3 , keeping the Bl K out}) 37. Bd2 a6 38. Be1 (38. Bc1 Kf6 39. Bd2 (39. Be3 f4 40. Bd2 Ke5 41. c4 b4 $19) 39... Bh6 40. Be1 Ke5 41. b3 fxg4+ 42. Kxg4 Kxd5 43. Kh5 Bg7 44. Kxg5 Ke4 (44... c4 45. Kf4 a5 46. Ke3 cxb3 47. axb3 a4 $19 {Stockfish9}) 45. c4 bxc4 46. bxc4 Kd4 47. Kf4 Kxc4 $19 {Stockfish9 nudged}) 38... Kf6 (38... Be5 39. Bd2 a5 $19 { Stockfish9}) 39. c4 b4 40. a3 a5 41. axb4 axb4 (41... cxb4 {also works}) 42. b3 Ke5 43. Bd2 Bf6 44. Bc1 fxg4+ 45. Kxg4 Ke4 46. Bxg5 Bxg5 47. Kxg5 Kd3 48. Kf5 Kc2 {mission accomplished! but it still takes a while to win} 49. Ke6 Kxb3 50. Kxd6 Kxc4 51. Kc6 b3 52. d6 b2 53. d7 b1=Q 54. d8=Q Qb5+ {and it's mate in 47- Lomonosov}) (35... b5 $1 36. Be1 (36. Be3 Kf6 37. Bd2 Bf4 38. Be1 Ke5 39. b3 fxg4+ 40. Kxg4 Kxd5 $19) 36... Kf6 37. Bd2 Bf4 38. Bxf4 gxf4 39. Kxf4 fxg4 40. Kxg4 Ke5 41. Kf3 Kxd5 {Komodo11 is a much simpler solution}) 36. Kxg4 Bf6 37. Bc1 $6 (37. a4 $11) (37. b3 b5 38. c4 $11) 37... a5 {( draw?)} (37... b5 { still gives Bl some chances of a breakthrough- the key question is whether the outside g pawn can be given up to secure ean entry on the Q side} 38. Be3 a6 39. Bd2 a5 40. Bc1 a4 41. a3 (41. Bd2 a3 42. bxa3 c4 43. Be1 Be5 44. Bd2 Bh8 45. Bxg5 Bxc3 46. Be7 Be5 47. Kf3 Kf7 48. Bh4 Bb2 49. a4 bxa4 50. Ke3 Be5 51. Bg5 Ke8 52. Bh4 Kd7 53. Bg5 Kc7 54. Ke4 Kb6 55. Bc1 c3 56. Ba3 c2 57. Kd3 Kb5 58. Kxc2 Kc4 59. Bc1 Kxd5 {But Lomonosov tablebases say it's drawn}) 41... b4 42. axb4 cxb4 43. cxb4 Bd4 44. b5 Kf6 45. Bxg5+ Ke5 46. Bd2 Kxd5 47. Bb4 Bxb2 { Lomonosov tablebases give a Bl win here} 48. b6 Bd4 49. b7 Ba7) 1/2-1/2

Friday, 4 May 2018

Opening Time

Aberystwyth maintained their good form of the season at home to Gwyddbwyll.com on Tuesday 17th April with a comfortable win, dominating all the games from the early stages. Playing White on top board, Adam Watkin-Jones took advantage of Iwan Griffiths's unfamiliarity with the theory of the Semi-Tarrasch Defence, gaining a passed pawn and a big space advantage, which he soon transformed into the win of a piece. I was nervous against Tegwyn Jones after a bad run of form recently, but quickly picked up two pawns in a Budapest Gambit, and was able to exchange into a winning ending without too much difficulty. Sam Holman's no-nonsense approach to the tricky Bird's Defence to the Ruy Lopez was not the best, but Dylan Jones didn't know the theory either and got a cramped position, allowing White to build pressure against a pinned knight and eventually win it. Dan Hardman's game against Emyr Llywelyn was a quiet Reti where White's aimless manoeuvring let him in for a knight fork, after which he was always ahead. A 4-0 win for Aberystwyth keeps the club on course for this year's League title.

[Event "Dyfed League: Gwyddbwyll.com"] [Site "?"] [Date "2018.04.17"] [Round "?"] [White "Watkin-Jones, A."] [Black "Griffiths, I."] [Result "1-0"] [ECO "D41"] [WhiteElo "1957"] [BlackElo "1628"] [Annotator "Rudy"] [PlyCount "43"] [EventDate "2018.04.18"] 1. c4 Nf6 2. Nc3 e6 3. Nf3 (3. e4 {main, a sharper line}) 3... d5 4. d4 c5 { semi-Tarrasch} 5. cxd5 Nxd5 (5... exd5 {Tarrasch}) 6. e4 (6. e3 {is a slower alternative}) 6... Nxc3 7. bxc3 Nc6 {dangerous, as it lures pawns forward to displace the N} (7... cxd4 8. cxd4 Bb4+ (8... Nc6 9. Bc4 b5 $1 { Spassky-Fischer, World Ch, Reykjavik 1972,1/2-1/2}) 9. Bd2 Bxd2+ 10. Qxd2 O-O 11. Bc4 Nc6 12. O-O b6 {main line, known from GM practice over the tears}) 8. d5 {main, 87% for Wh} exd5 9. exd5 {Stockfish9 already considers this winning for Wh} Qe7+ (9... Ne7 10. d6 Nf5 (10... Nc6 11. Bf4 {2-0}) 11. Bb5+ Bd7 12. Qe2+ {wins a piece}) 10. Be2 Ne5 (10... Nd8 11. O-O Qd6 12. Re1 Be7 13. Bb5+ Bd7 14. Bxd7+ Kxd7 15. Qa4+ Kc8 16. Qg4+ Qd7 17. Qxg7 {Carr-Everitt, Gb ch U120, aberystwyth 2014,1-0}) 11. O-O $18 Bd7 (11... Nxf3+ 12. Bxf3 Qd6 13. g3 ( 13. Re1+) (13. Bg5) 13... Be7 14. Bf4 Qf6 15. d6 Bxd6 16. Bxd6 Be6 17. Bxb7 Qd8 18. Bc6+ {Huebner-Hagemann, simul, CC siemens , Munich 2002, 1-0}) (11... Qc7 12. Nxe5 Qxe5 13. Bb5+ Kd8 14. Re1 Qd6 15. Re8+ Kc7 16. Qf3 {Steeger-Lemos de Freita, ICCF jubilee corr 2001,1-0 & Matzies-Kail, Eschborn op 2017, 1-0}) 12. Bf4 {Komodo11 & Stockfish9} (12. Nxe5 Qxe5 13. Bb5 O-O-O 14. Bxd7+ Rxd7 15. Qa4 (15. Re1 Qc7 16. Qg4 $16 {Komodo11}) 15... Bd6 16. g3 g5 (16... a6 $11 { Komodo11}) 17. Be3 (17. Qxa7) 17... h5 18. Qxa7 $16 {Sauleda Roig-Oliver Grammatico, Mallorca ch tm. Palma de Mallorca 2002,1-0}) (12. Rb1 $1 O-O-O 13. Qb3 Bf5 (13... b6 14. Qa3 Nxf3+ 15. Bxf3 Bf5 16. Rxb6 axb6 17. Qa8+ Kc7 18. Qc6+ Kb8 19. Qxb6+ Kc8 20. d6 Rxd6 21. Qxc5+ Kd8 22. Qxf5 $18 {Stockfish9}) 14. Nxe5 Bxb1 15. Re1 Qxe5 16. Bg4+ Bf5 17. Rxe5 Bxg4 18. Qa4 $18 {Stockfish9}) 12... Ng6 (12... f6 13. Re1 (13. Nxe5 fxe5 14. Bh5+ g6 (14... Kd8 15. Re1 $18) 15. Bxe5 O-O-O 16. Bxh8 $18 {Komodo11}) (13. Rb1 O-O-O 14. Qb3 Bf5 15. Nxe5 fxe5 16. Bg5 $18 {Komodo11}) 13... O-O-O 14. Nxe5 fxe5 15. Bf3 exf4 16. Rxe7 Bxe7 {Urosevic-Cirovic, Belgrade Winter op 2008,1-0}) 13. Bg3 $18 (13. Bc7 { prevents 0-0-0, & driving the B away with Rc8 , leaves the Bl K stuck in the centre, awaiting Re1} Qf6 14. d6 $18 {Komodo11 & Stockfish9- sharpest}) (13. Re1 $18 {Komodo11; looked at by Rudy during game} O-O-O (13... Nxf4 14. Bc4 Ne6 15. dxe6 fxe6 16. Ne5 O-O-O 17. Nxd7 Rxd7 18. Bxe6 Qxe6 19. Rxe6 Rxd1+ 20. Rxd1 $18) 14. Bf1 Nxf4 (14... Qf6 15. Bg5 $18) 15. Rxe7 Bxe7 16. Qb3 $18 (16. Ne5 $18)) 13... O-O-O 14. Re1 $18 (14. Rb1 $1 $18 {Komodo11 & Stockfish9} Be6 ( 14... Bf5 15. Qa4 Bxb1 16. Qxa7 $1 (16. Rxb1 f5 17. Qxa7 f4 18. Ng5 {mating , Komodo11}) 16... Qxe2 17. Rxb1 Qe7 18. Rb6 {mating} (18. Bd6 Kd7 19. Bxe7 $18) (18. Ng5 Kd7 19. Qa4+ Kc8 20. d6 $18 {Komodo11}))) (14. Qb3 $5 {Rudy} Qxe2 15. Qa3 (15. c4 Qe7 16. Qa3 a6 17. Rab1 Qf6 18. Qa5 Nf4 19. Bxf4 Qxf4 20. Rxb7 Kxb7 21. Rb1+ Bb5 22. Qxd8 Qxc4 23. d6 Qd3 24. Qc7+ Ka8 25. Qc8+ Ka7 26. Qc7+ $11 { Komodo11 & Stockfish9}) (15. Rfe1 {doesn't trap the Q}) 15... Qa6 16. Qxa6 bxa6 17. Rfb1 Bb5 18. a4 Bd3 19. Rb8+ Kd7 20. Rb7+ Kc8 (20... Ke8 21. Re1+ Be7 22. d6 $18) 21. Rb8+ $11) 14... Qf6 15. Qb3 $18 (15. Nd2 Re8 16. Rb1 Bd6 17. Bxd6 Qxd6 18. Nc4 Qf6 19. d6 Nf4 20. Bf3 Nh3+ 21. Kf1 Qh4 22. Rxe8+ Rxe8 23. Bxb7+ Kd8 24. gxh3 Qxc4+ 25. Kg1 $16 {Komodo11}) 15... Bd6 16. Reb1 (16. Rab1 b6 17. a4 $18 {Komodo11}) 16... b6 17. a4 Bxg3 (17... Nf4 $5 {Rudy} 18. Bxf4 Bxf4 19. a5 $18) 18. hxg3 {the Bl N is now out of the game} Bf5 19. Rb2 (19. Rd1 a5 20. Nd2 Kc7 21. Nc4 Rd6 (21... Rb8 22. d6+ Kd8 23. Qb5 $18 {Komodo11})) (19. Ba6+ Kc7 20. Rd1 Qd6 21. a5 b5 22. Bxb5 Rb8 23. Qc4 $18 {Stockfish9}) 19... Rd6 ( 19... Be4 20. c4 Bxf3 21. Bxf3 Ne5 22. Be2 Kc7 23. a5 $18 {Komodo11}) 20. a5 Rhd8 21. Qc4 $1 $18 (21. Qa4 Qxc3 22. axb6 Qxb2 23. Qxa7 (23. bxa7 $18) 23... Rxb6 24. Ba6+ Rb7 25. Bxb7+ Qxb7 26. Qxc5+ Qc7 (26... Kb8 27. Nd4) 27. Ra8+ Kd7 28. Ra7 $18 {Komodo11}) (21. Nd2 Ne5 22. Qa3 Nd3 23. axb6 Rxb6 24. Rxb6 axb6 ( 24... Qxb6 25. Rb1 $18 {the Bl K position is far too open.})) (21. Bb5 Bd7 22. Nd2 Bxb5 23. Ne4 Qf5 24. Nxd6+ Rxd6 25. Qxb5 Qxd5 26. Re2 $18 {Stockfish9}) 21... Kd7 (21... Kb8 22. axb6 Rxb6 (22... axb6 23. Qa6 {with a quick mate}) 23. Qa4 (23. Qxc5) 23... Rd7 24. Rxb6+ Qxb6 25. g4 $18) 22. g4 $1 {simplest, winning a piece. while the Bl K is not yet out of the woods} (22. Qa6 $5 { Rudy, allows Bl wiggle-room} Ke8 23. Bb5+ (23. Qb5+ Kf8 24. axb6 axb6 25. c4 $14) 23... Kf8 24. Re1 Qxc3 25. Rbe2 $16) 1-0 [Event "Dyfed League: Gwyddbwyll.com"] [Site "?"] [Date "2018.04.17"] [Round "?"] [White "Jones, Tegwyn"] [Black "Francis, Matthew"] [Result "0-1"] [ECO "A51"] [WhiteElo "1174"] [BlackElo "1762"] [Annotator "Rudy"] [PlyCount "80"] [EventDate "2018.04.18"] 1. d4 Nf6 2. c4 e5 3. e3 {declining the Budapest} (3. dxe5) 3... Bb4+ 4. Bd2 Bxd2+ 5. Nxd2 exd4 6. exd4 O-O {Bl has achieved a comfortable equality & Wh only scores 36% from this position} 7. Bd3 Re8+ (7... d5 {main} 8. Ne2 Nc6 9. O-O dxc4 10. Nxc4 Re8 {leaves Wh with a vulnerable d pawn & a displaced N on e2 }) 8. Ne2 d5 9. c5 {scores a bit bettter at 33 % than the alternative} (9. O-O {which just manages 17% for Wh}) 9... Nc6 10. a3 {missing the real threat rather than Nb4} (10. O-O Bg4 11. f3 {Wh has a hole at e3 to deal with} (11. Nb3 a5 12. f3 Bd7 13. Re1 Qe7 14. Qd2 Qe3+ 15. Qxe3 Rxe3 16. Bb5 a4 17. Nd2 Rae8 {Gielow-Lagemann, DESC corr 2001,0-1}) 11... Bh5 {2 draws, 3 losses for Wh } (11... Qe7 {3 losses, 2 draws for Wh} 12. Rf2 Bh5 {Taylor-Heaven, WLS ch 2014, 1/2-1/2} (12... Bd7 {Komodo11} 13. Nf1 Nb4 14. Bb1 Bb5 15. Neg3 g6 16. a3 Nc6 17. b4 Qe1 18. Rd2 h5 19. Bc2 Qxd1 20. Raxd1 a5 21. Bd3 Nxd4 22. Kf2 h4 { Klaric-Bajkusa, Split op 2009,0-1}))) 10... Nxd4 $19 11. O-O Nxe2+ 12. Bxe2 Qe7 {winning a second pawn, now its support has gone} 13. Bb5 c6 14. Bd3 Qxc5 15. b4 Qe7 {provoking exchanges that lead to a winning endgame} (15... Qd6 { with chances of an attack preferred by both Komodo11 & Stockfish9}) 16. Re1 Qxe1+ 17. Qxe1 Rxe1+ 18. Rxe1 Be6 (18... Bd7 {Rudy & Komodo11, brings the R to the e file quicker} 19. Nb3 (19. Re7 Kf8) 19... Re8 20. Rc1 Kf8 $19) 19. Nb3 Re8 20. Nc5 Bc8 21. Rxe8+ {keeping Rs on gives Wh better chances of surving, When behind, swap pawns, not pieces ( & vice versa when ahead). There is no entry for either R on the only open file so far.} Nxe8 22. f3 Nd6 (22... g6) 23. Bc2 {no need for this retreat} (23. Kf2) 23... h6 24. Kf2 Kf8 25. Ke3 $2 Nc4+ 26. Kd4 Ke7 (26... Nxa3 {why not take the pawn? A king invasion via e5 is met by Ke7, & Bl also gains a tempo on the B} 27. Bd3 Ke7 28. Ke5 b6 29. Nb3 Be6 30. f4 Nc4+ 31. Bxc4 dxc4 32. Nd4 f6+ 33. Ke4 Kd6 $19 {is a very comfortable win for Bl}) 27. a4 b6 28. Nb3 Be6 (28... Kd6 {looks more natural, Rudy & Komodo11} 29. a5 Ne5 30. axb6 axb6 31. Kc3 (31. Bd1 c5+ {anyway, as grabbing the pawn loses a piece} 32. bxc5+ bxc5+ 33. Nxc5 $2 Nc6+) 31... c5 $19 {mobilizes the centre pawns}) 29. f4 Nd6 (29... Bg4) (29... a5 30. f5 axb4 31. fxe6 fxe6 32. Kd3 c5 {Komodo11- Bl's pawn mass is worth more than a piece, but looks like an unneccesary complication when already 2 pawns ahead}) 30. Nd2 ( 30. a5 {gets rid of a pawn & takes pawns away from the reach of Bl's B}) 30... Nf5+ (30... a5 31. bxa5 c5+ 32. Kd3 bxa5 (32... Bf5+ 33. Kc3 d4+ 34. Kb2 Bxc2 35. Kxc2 bxa5) 33. Bd1 Bf5+ $19 {Komodo11}) 31. Kd3 (31. Bxf5 {looks like a chance, but Bl is too much ahead} Bxf5 32. b5 Kd6 33. bxc6 Kxc6 34. Nf1 a5 $19 {Komodo11}) 31... c5 32. b5 {leaves both Q side pawns exposed to a Bl K entry} (32. bxc5 bxc5 33. Bd1 (33. Bb3 $5 c4+ (33... Kd6)) 33... c4+ 34. Ke2 d4 $19) 32... c4+ 33. Ke2 Nd4+ 34. Kd1 Nxc2 (34... Bg4+ 35. Kc1 Ne2+ 36. Kb1 Nxf4 { picks up a 3rd pawn, but exchangiing a piece gives a simpler endgame}) 35. Kxc2 Kd6 {played by Komodo11- getting the K into the act, but it does risk a blochade of the pawns on the same colour as their B} (35... d4 {though desirable, has the pawns needing a bit of extra care, having outrun their K support} 36. Nf3 Bf5+ 37. Kc1 (37. Kd2 $2 c3+ 38. Ke1 d3) 37... d3 38. Kd2 Kd6 39. Kc3 Be4 40. Nd2 Bd5 (40... Bxg2 41. Nxc4+ Ke6 42. f5+ Kf6 43. Kxd3 Bf1+ 44. Kc3 Bxc4 45. Kxc4 Kxf5 {is more complex to foresee}) 41. g3 {Blockade? But Bl can force a breakthrough elsewhere} Kc5 42. Nf1 h5 43. Nd2 f6 44. Nf1 g5 45. Nd2 gxf4 46. gxf4 h4 47. Nf1 Be6 48. Ne3 (48. Nd2 Kd5 49. Nxc4 Ke4 50. Nb2 Kxf4 51. Nxd3+ Kf3 {& since N's have extra trouble with R's pawns as well, its easy to win ( those Wh Q side pawns remain vulnerable to a B)}) 48... d2 49. Kxd2 Kb4 {picks up the Q side pawns}) 36. Kc3 Kc5 37. Nf3 {hoping to hold with Nd4?} Bg4 38. Ne1 (38. Nd4 Bd1 {picks up both Wh Q side pawns}) 38... d4+ 39. Kd2 c3+ 40. Kc2 Bf5+ (40... Kc4) 0-1 [Event "Dyfed League: Gwyddbwyll.com"] [Site "?"] [Date "2018.04.17"] [Round "?"] [White "Holman, S."] [Black "Jones, Dylan"] [Result "1-0"] [ECO "C61"] [WhiteElo "1316"] [BlackElo "1206"] [Annotator "Rudy"] [PlyCount "53"] [EventDate "2018.04.18"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 {Bird's defence} 4. Nxd4 exd4 5. c3 {eliminates the spearhead at once & gaining a centre; but allows Bl a tactic} (5. O-O { main, more flexible & avoids the tactice}) 5... a6 {giving Wh a score of 66%} ( 5... Qg5 {is a little awkward to meet; Wh scoring 43%} 6. Bf1 Bc5 7. d3 Qf6 ( 7... Qg6)) 6. Ba4 (6. Bc4) 6... dxc3 7. bxc3 $146 {strenghtening the centre} ( 7. Nxc3 {developing, 3-1}) 7... Nf6 8. Bc2 (8. e5 Nd5 (8... Qe7 $2 9. O-O $18) 9. O-O $14) 8... b5 (8... d6 {keeps the N in place, though the Wh centre gives Wh much the better prospects} 9. d4 $16) 9. O-O Bb7 10. Re1 c5 11. e5 Nd5 12. Be4 $16 Qg5 $2 {Bl needs to be developing, not hoping for a snap mate on g2} ( 12... Bc6 {securing the B, avois a lot of later trouble}) 13. d4 (13. c4 bxc4 14. d3 Qh4 15. g3 Qh3 16. dxc4 {wins a piece, because of the loose B}) (13. d3 Qe7 14. c4 $18 {is similar, & easier to see}) 13... Qe7 14. Qf3 Qe6 15. a4 $18 (15. c4 $1 bxc4 16. Nc3 Nxc3 17. Bxb7 $18 {Stockfish9} cxd4 (17... Rb8 18. d5 Qg6 19. e6 Rxb7 20. exf7+ Kd8 21. d6 Ne4 22. Bg5+ Kc8 23. Qxe4 Qxe4 24. Rxe4 Kb8 25. Be7 Ka8 26. Rxc4 {and Bl is totally tied down- Stockfish9}) 18. Bxa8 Bb4 19. Qb7 O-O 20. Qxb4 Rxa8 21. Bb2 $18 {a R up}) 15... Be7 16. axb5 (16. dxc5 $1 f5 (16... Qxe5 17. Bd2 f5 18. Bc2 Qc7 19. axb5 axb5 20. Rxa8+ Bxa8 21. Bb3 Qc6 22. Bg5 Kf8 23. Bxd5 Qxd5 24. Bxe7+ $18 {Stockfish9}) 17. Bxf5 Qc6 18. Be4 Rf8 19. Qh5+ Kd8 20. Nd2 (20. c4 Qxc5 21. Ra2 Qxc4 22. Rc2 Qxa4 23. Bg5 $18 {Stockfish9} (23. Rd2 Qc4 24. Qd1 Bc5 25. Rc2 Qxc2 26. Qxc2 Bxf2+ 27. Qxf2 Rxf2 28. Kxf2 Kc7 29. Ba3 $18 {Stockfish9}))) 16... axb5 17. Rxa8+ Bxa8 18. dxc5 ( 18. Na3 {Rudy & Stockfish9} O-O 19. Nxb5 c4 20. Bd2 $16 (20. Bf5 Qb6 (20... Qc6 21. Qh3 g6 22. Bxd7 $18) 21. Qh3 g6 22. Bxd7 $18)) 18... Bxc5 {missing the threat that Wh has been preparing} (18... Qxe5 19. Bd2 f5 20. Bxd5 Qxd5 21. Bg5 $18 {but Bl can escape the worst with}) (18... O-O 19. c6 (19. Rd1 Nc7 $11) 19... Nb6 (19... Bxc6 20. Bf5 {the Bl Q is in trouble} Ne3 21. Bxe6 Bxf3 22. Bxe3 fxe6 23. gxf3 $18 {Stockfish9}) 20. Qd3 h6 21. Qxb5 Rb8 (21... Bd8 22. cxd7 Bxe4 23. Rxe4 Nxd7 24. Ba3 $16 (24. Be3 $16)) 22. c7 Rc8 23. Be3 Bxe4 24. Bxb6 Bd3 25. Qb2 $18 {Stockfish9}) 19. Rd1 $18 O-O 20. Bxd5 Qg6 21. Bxa8 Qxb1 22. Be3 (22. Be4 {Stockfish9} Qa2 23. g3 $18 (23. Rxd7 $18)) 22... Qa2 23. Bd5 (23. Bxc5 Rxa8 24. Rxd7 $18) 23... Bxe3 $2 (23... Qa7 24. Bf4 $18) 24. Bxa2 Bc5 25. Rxd7 h6 26. Rxf7 Rd8 27. Rd7+ (27. Rf8+ {Rudy, is the quickest mate} Kh7 28. Qf5+ g6 29. Qf7#) 1-0 [Event "Dyfed League: Gwydbwyll.com"] [Site "?"] [Date "2018.04.17"] [Round "?"] [White "Llywelyn, E."] [Black "Hardman, Dan"] [Result "0-1"] [ECO "E60"] [WhiteElo "950"] [BlackElo "1246"] [Annotator "Rudy"] [PlyCount "76"] [EventDate "2018.04.18"] 1. Nf3 Nf6 2. d4 g6 3. c4 c5 4. e3 (4. Nc3) (4. d5) 4... Bg7 5. Nbd2 (5. Nc3 { main, posts the N on a more active square.}) 5... cxd4 6. Nxd4 (6. exd4 d5 { more frequent, 1 draw & 6 Bl wins}) 6... O-O 7. Be2 (7. Bd3 {2 draws}) 7... Nc6 8. N2b3 (8. N4b3 d5 9. cxd5 Nxd5 10. Bf3 Ne5 11. O-O Nb4 12. a3 Nbd3 (12... Nxf3+ 13. Qxf3 Nc2 14. Rb1 Qc7 $19) 13. Be4 Qb6 14. Bxd3 Nxd3 15. Nc4 Qd8 16. Qe2 e5 17. e4 Be6 18. Ncd2 Nf4 19. Qf3 h5 {Gualtieri-Msacellani, ITA ch U18, Rimini 1993,0-1}) 8... b6 (8... d5 {Komodo11} 9. cxd5 Nxd4 10. Nxd4 Nxd5 $15 ( 10... Qxd5 $15)) (8... d6 9. O-O a5 10. Bf3 a4 11. Nxc6 bxc6 12. Nd4 Bb7 13. Qe2 d5 14. Rd1 e5 15. Nc2 Ba6 $17 (15... e4 $19 {Komodo11}) 16. Na3 e4 $19 { David-Kostin, GER-RUS Seniors, Serpukhov 2005,1/2-1/2}) 9. O-O Bb7 $15 { Bl is better develped with more active pieces . Wh has lost time with the Nd2-b3 moves} 10. Bd2 Ne4 (10... Nxd4 11. exd4 Ne4 12. Bf4 d5 $15 {Komodo11}) 11. Nf3 $2 {undeveloping & dropping a key pawn ( splitting up the other Q side pawns)} (11. Be1 a5 12. f3 Nd6 13. a4 Nxd4 14. Nxd4 Rc8 15. b3 $11 {Komodo11}) 11... Bxb2 $17 12. Rb1 Bg7 13. Bc1 $2 {to make use of the otherwise passive B, but Bl should now grab an exchange} Qc7 (13... Nc3 $19) 14. Bb2 Bxb2 15. Rxb2 Rfd8 (15... Rac8) 16. Nbd4 Rac8 17. Qc1 Nxd4 18. Nxd4 (18. exd4 d5 $17 { Komodo11}) 18... Nc5 (18... Ba6 $19 {Komodo11} 19. Rc2 e5 20. f3 (20. Nb3 d5 $19) 20... exd4 21. fxe4 dxe3 22. Qxe3 Qc5 $19 {the Wh pawns are split & vulnerable, with Wh also having a bad Bcontrained by those pawns & already a pawn down}) 19. Nf3 Bxf3 (19... d5 $19 {Komodo11} 20. Rc2 (20. cxd5 Na4 21. Qxc7 Rxc7 22. Rd2 Rxd5 23. Rxd5 Bxd5 24. a3 Nc3 25. Bd3 b5 {and Bl advances on the Q side}) 20... dxc4 21. Rxc4 e5) 20. Bxf3 (20. gxf3 d5 $19 {Bl has an extra Q side pawn, more active pieces & a weakened K side to play against}) 20... Nd3 {wins the exchange after all.} 21. Qb1 Nxb2 22. Qxb2 Qxc4 {and another pawn} 23. Qe5 e6 (23... Qc5) 24. Qf6 Qc3 25. Qxc3 Rxc3 26. g3 d5 27. Kg2 Rdc8 (27... Ra3 28. Ra1 Rc8 (28... Kg7)) 28. Kg1 d4 (28... Ra3) (28... Rc1) 29. e4 $2 (29. Re1 Rc1 $19) 29... Rxf3 30. Kg2 Rfc3 (30... Ra3) 31. Rd1 Rd8 ( 31... e5) 32. Kf1 Rc2 33. Ke1 Rxa2 34. h4 d3 (34... Rc8 35. Rxd4 Rc1+ 36. Rd1 Rxd1+ (36... Rcc2) 37. Kxd1 Rxf2 {Komodo11}) 35. g4 Re2+ 36. Kf1 Rxe4 (36... Rc2 37. e5 d2 38. Ke2 Rc1 39. Rxd2 Rxd2+ 40. Kxd2 Rc5 41. f4 a5 {Komodo11, the outside passed pawn Qs}) 37. f3 Re2 38. h5 Kf8 (38... gxh5 39. gxh5 Rh2 40. Kg1 Rc2 41. Kf1 Kg7 {is another of several ways to win}) 0-1

Saturday, 21 April 2018

A Hardman is Good to Find

Steynton B could only field three players against Aberystwyth at the Emlyn Cafe, Tanygroes on Wednesday 11 April, meaning that we needed one and a points to seal the match. On top board, Rudy van Kemenade won a pawn early on against John Miller in a King's Indian and had a dominating position throughout, picking up more material as Black looked vainly for counterplay. I got good pressure in a Sicilian against David Pinch's King's Indian Attack setup, but missed a tactic which won him a pawn. I should still have been OK, but was thrown off my stride by my mistake and blundered to bring the game to a quick conclusion. Dan Hardman, playing his first game for the Club, got a dangerous passed pawn against Gwyn Evans's Sicilian, and Black's attempt at a kingside counterattack only blundered a piece, a good start for the new player against a higher rated opponent. Aberystwyth won the match 3-1 with the default on Board 4.

[Event "Dyfed League:SteyntonB-Aberystwyth"] [Site "?"] [Date "2018.04.11"] [Round "?"] [White "Van Kemenade, R."] [Black "Miller, John S"] [Result "1-0"] [ECO "E90"] [WhiteElo "2015"] [BlackElo "1648"] [Annotator "Rudy"] [PlyCount "73"] [EventDate "2018.04.12"] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 (5. f3 {Samisch} O-O 6. Be3 e5 7. Nge2 (7. d5 Ne8 8. g4 {Greatorex-Miller, Dyfed Open 2018,1-0}) 7... Nc6 8. d5 Ne7 {Hurn-Miller, Dyfed Open 2018,0-1}) 5... O-O 6. h3 {the Makogonov system, which seemed to surprise Bl} (6. Be2 {more usual}) 6... Nc6 {played quite often, but possibly incorrect} (6... e5 {main, also against 6. Be2}) (6... Nbd7 7. Bg5 h6 {disliked by Bronstein in pm analysis & by Kotronias in his theory book, as it weakens g6} 8. Be3 e5 9. d5 Nh5 10. Nd2 a6 11. g3 Qe8 12. Be2 Kh7 $5 13. Nb3 Ndf6 14. c5 Bd7 15. Na5 Rb8 16. Nc4 Bb5 {leading to a complex series of sacrifices by Bl & then countersacrifices by Wh} 17. cxd6 Bxc4 18. dxc7 Rc8 19. Bxc4 Rxc7 20. Bd3 Nxe4 21. Bxe4 f5 22. Bc2 f4 23. Bb6 fxg3 24. Bxc7 Qf7 25. Bb6 gxf2+ 26. Kd2 Ng3 27. Qg4 Nxh1 28. Rxh1 f1=Q 29. Rxf1 Qxf1 30. Qxg6+ Kg8 31. Qh7+ Kf7 32. Bg6+ Ke7 33. Qxg7+ Kd6 34. Qc7# {Bronstein-Van Kemenade, Manchester 1989,1-0}) 7. Bg5 e5 $2 {a mistake, similar to what can happen in a Bg5 line the Samisch} (7... h6 {weakens g6} 8. Be3 a6 9. Qc2 b5 10. cxb5 axb5 11. Bxb5 Nb4 12. Qd2 c6 13. Be2 Be6 14. a3 Bb3 15. Rc1 Na2 16. Nxa2 Bxa2 17. Bd3 {Van Kemenade-Stuttard, Liverpool Fide 2006, 1-0}) (7... Nd7 8. Qd2 f6 9. Be3 e5 10. d5 Ne7 11. O-O-O b6 12. g4 {Van Kemenade-Jeske, EU Seniors tm, Wales- Deutschland Frauen, Dresden 2013, 0-1 when Wh overpressed}) 8. dxe5 (8. d5 {played by 12 people who missed the tactic, though} Ne7 { 70 % for Wh} (8... Nd4 {however ! win ! loss})) 8... dxe5 (8... Nxe5 9. Nxe5 { leads to the same ; 4-1}) 9. Qxd8 {again 2 players missed this idea} Nxd8 (9... Rxd8 10. Bxf6 {2 draws} (10. Nd5 $1 {Komodo11; 4-0})) 10. Bxf6 (10. Nxe5 Nxe4 11. Nxe4 Bxe5 $11 {Rauleac-Lupu, ROM ch U14, Calimanesti 2000,0-1}) 10... Bxf6 11. Nd5 Bg7 (11... Kg7 12. Nxc7 Rb8 13. Nd5 Re8 14. O-O-O $16 {Lonnee-Sileika, NED-LTU ICCF email 2016, 0-1}) 12. Nxc7 Rb8 13. O-O-O (13. Bd3 Ne6 (13... Nc6 14. Rd1 b6 15. O-O Bb7 16. b3 Rbc8 17. Nd5 $16 {Bagoly-Vizkeleti, Eger Tel op 2009 , 1-0}) 14. Nxe6 Bxe6 15. b3 Rfd8 16. Rd1 Rd6 17. Ke2 {rated = by Komodo11; Dobosz-Klocker, AUT ch tm 2007,1-0}) (13. Rd1 Ne6 14. Nxe6 Bxe6 15. Bd3 Rfd8 16. Ke2 f6 17. b3 Bf8 18. Bc2 {Spraggett-Sanchez Jerez, Portugal op, Oeiras 2015,1-0 - Komodo11 again rates position as =}) 13... Nc6 (13... Ne6 14. Nd5 Nc5 15. Nc3 $14 {Komodo11}) 14. Be2 (14. a3 f6 15. b4 $16 {Komodo11}) (14. c5 {at once might gain Wh a tempo if f5 as in the game, but Bl has an alternative in} Nd4 15. Nxd4 exd4 16. Kb1 Bd7 17. Bd3 Rfc8 (17... Bc6 18. Nd5 Rfe8 $14) 18. Nd5 Rxc5 19. b4 Rc6 20. Ne7+ Kf8 21. Nxc6 bxc6 22. a3 c5 23. Rd2 $16 {Komodo11}) 14... f5 15. exf5 (15. Nd2 fxe4 16. Nxe4 Bf5 17. f3 Bxe4 18. fxe4 Rf2 19. Bg4 (19. Bf3 Nd4 $11) 19... Rxg2 20. Be6+ Kh8 21. Rhf1 Nd4 22. Bd5 Rf8 23. Rxf8+ Bxf8 24. Ne6 Nxe6 25. Bxe6 Bc5 26. Rd7 b6 27. Rxa7 Rg1+ $11 { Komodo11}) 15... gxf5 (15... Bxf5 16. Nd5 Bh6+ 17. Ne3 Be4 18. Rd2 Nd4 $11 { Komodo11}) 16. c5 (16. Ng5 Nd4 17. Rhe1 e4 18. Nd5 Be5 (18... h6 19. Ne7+ Kh8 20. Ng6+ Kg8 21. Nxe4 fxe4 22. Nxf8 Kxf8 23. Bg4 Bxg4 24. hxg4 Re8 25. Kb1 $14 {Komodo11}) 19. Kb1 h6 20. f4 $14 {Komodo11}) 16... e4 17. Bc4+ Kh8 18. Ng5 Bh6 {the B looks to be on the wrong diagonal here} (18... Be5 {Komodo11} 19. Nce6 Rf6 20. g3 Bxe6 21. Nxe6 Re8 22. Nf4 Bd4 23. Rd2 e3 24. Re2 Bxc5 25. Nd5 Rg6 26. Nxe3 Bxe3+ 27. Rxe3 Rxe3 28. fxe3 Rxg3 29. Rf1 Rxh3 30. Rxf5 Rxe3 31. Rf8+ Kg7 32. Rf7+ Kg6 33. Rxb7 $11 {Komodo11, though the long range B cooperates with the R better than the N does}) (18... Ne5 {expected by Wh} 19. Be2 (19. Bb5 {provoking the next, which becomes a weakness} a6 20. Be2 Bf6 21. h4 Be7 22. Rd5 Nc6 23. a3 $16 {Komodo11}) 19... b6 $11 {Komodo11}) 19. h4 $16 Ne5 20. Be2 Bd7 (20... Nf7 21. f4 exf3 22. Bxf3 Nxg5 23. hxg5 Bxg5+ 24. Kb1 Be3 25. b4 $16 {Komodo11- Bl has reagained the pawn but his pieces are mainly undeveloped, while the Wh ones survey an open board}) 21. Rd5 (21. Rd6 {a strong candidate, considered- Bl is then virtually forced to give up his Bl squared B} Bxg5+ ( 21... Kg7 22. Rhd1 $18 {a N invasion on e6 is difficult to deal with} (22. Kb1 Bxg5 23. hxg5 f4 24. b4 $16)) 22. hxg5 Rbc8 23. Nd5 Rxc5+ 24. Kb1 Be8 25. Nf4 Rc6 26. Rd8 $18 {Komodo11}) 21... Bg7 22. Nce6 (22. Nge6 {pm analysis} Bc6 { Komodo11} 23. Nxf8 Bxd5 24. Nxd5 Bxf8 25. b4 b6 26. cxb6 axb6 27. Rd1 $16) 22... Bc6 (22... Bxe6 23. Nxe6 Rfe8 24. Nxg7 Kxg7 25. Rhd1 $16 {Komodo11-looks better than the game continuation}) 23. Rd6 $18 Rfe8 (23... Rg8 $5) 24. Nxg7 Kxg7 25. Rhd1 Rbc8 26. Kb1 (26. b4 a6 27. h5 $18 {Komodo11}) (26. Kd2 Re7 ( 26... e3+ 27. fxe3 Bxg2 28. Rg1 Bc6 29. Kc3 Re7 30. Kd4 Kh8 31. Re6 $18) 27. Ne6+ Kh8 28. Nf4 Rg8 29. Ke3 $18 {Komodo11}) 26... h6 {still weakens g6} (26... Ng4 27. h5 Nf6 28. Ne6+ Kh8 29. Nd8 $18 (29. Ng5 $18 {Komodo11})) 27. Ne6+ Kh7 28. Nd8 (28. Nd4 Bd7 {considered, though Wh is winning after both} 29. b4 {&} ( 29. f4 exf3 30. gxf3 Rxc5 31. f4 Ba4 32. b3 Nf7 33. Rf6 Kg7 34. Re6 Nd8 35. Rd6 Nf7 36. Ne6+ Kh7 37. Nxc5 Nxd6 38. Bh5 $18 {Komodo11}) 29... Re7 30. f4 exf3 31. gxf3 $18) (28. Nf4 {is a good post for the N} Re7 29. b4 Ng4 30. Bxg4 fxg4 31. Rf6 g3 32. fxg3 e3 33. Rdd6 Rce8 (33... e2 34. Rxh6+ Kg8 35. Rdg6+ Kf7 ( 35... Rg7 36. Rxg7+ Kxg7 37. Re6) 36. Rh7+ Ke8 37. Rxe7+ Kxe7 38. Re6+ $18) 34. Rxh6+ Kg8 35. Rdg6+ Rg7 36. Rxg7+ Kxg7 37. Re6 Rxe6 38. Nxe6+ Kf6 39. Nd4 Bxg2 40. Kc2 $18 {Komodo11}) 28... Bd7 $2 {based on a miscalculation that Bl would be able to pick up the N on d8} (28... Re7 29. Nxc6 Rxc6 30. R1d5 f4 31. b4 Kg7 32. h5 $18 {as Bl is running out of moves}) 29. Rxd7+ $18 Kg8 (29... Nxd7 30. Rxd7+ Kg6 31. Nxb7 $18) 30. R7d5 (30. Nxb7 {seriously considered by Wh, & marginally best for Komodo11} Nxd7 31. Rxd7 Kf8 32. Rd5) (30. R7d6 Rxc5 31. Rxh6 $18 {alternative}) 30... Rc7 31. Rd6 (31. Rxe5 {considered for a while as the Wh pieces get very active} Rxe5 32. Bc4+ Kh7 {other moves give back an exchange} 33. Ne6 Re7 34. Rd6 {looks fine for Wh, who couldn't see much further, though the Engine feels compelled to give up a R to get rid of the pesky N} Kh8 35. Nf8) 31... Ree7 32. Rxh6 Rxc5 33. Ne6 Rc8 (33... Rc6 {aiming to win a pinned ,N loses the K instead} 34. Rd8+ Re8 (34... Kf7 35. Rf8#) 35. Rxe8+ Kf7 36. Bh5+ Ng6 37. Rxg6 Rxe6 38. Rgxe6+ Kg7 39. R6e7+ Kf6 40. Rf7# { last variation Komodo11}) 34. Nf4 (34. Rd5 $1 {Komodo11, forces the N to move & wins another pawn}) 34... Rec7 {hoping for some R activity, but all points are guarded} 35. Re6 (35. Nd5 {Komodo11, considered} Rf7 (35... Rc2 36. Ne7+ Kg7 37. Nxf5+ Kg8 38. Ne7+ Kg7 39. Nxc8 Rxe2 40. Re6 $18) 36. Bh5 Rg7 37. Nf6+ Kf8 38. Rh8+ Ke7 39. Nd5+ Kd7 40. Nb6+ Kc7 41. Nxc8) 35... Nd3 36. Nxd3 (36. Bxd3 exd3 37. Rg6+ Kh8 38. Rd6 Rc2 39. Nxd3 {also safe}) 36... Rc2 (36... exd3 37. Bxd3 {covers c2}) 37. Nf4 1-0 [Event "Dyfed League: Steynton B - Aberystwyth"] [Site "?"] [Date "2018.04.11"] [Round "?"] [White "Pinch, David"] [Black "Francis, Matthew"] [Result "1-0"] [ECO "A04"] [WhiteElo "1623"] [BlackElo "1762"] [Annotator "Rudy"] [PlyCount "53"] [EventDate "2018.??.??"] 1. e4 c5 2. d3 {going for a King's Indian Attack, though may be declaring intentions a little soon} (2. Nf3 {first?}) 2... Nc6 3. Nd2 {again it is better to delay this committal move. Playing Nf3, g3, Bg2 & 0-0 are all moves Wh is wanting to play. The e4 pawn is not under attack, & perhaps the N may be better on c3 or maybe moving the QB first is made possible.} e5 {now the N can't reach the d5 hole immediately & Wh has to spend a further 3 moves getting it there.} (3... g6 {main, also delaying showing his hand, maybe e6 is wanted}) 4. Ngf3 d6 5. g3 g6 (5... Be7 {alternative}) 6. Bg2 Bg7 7. O-O Nge7 8. Re1 {has been played, however , given the pawn structure, the R is misplaced here.e4 is not attacked, & e5 , the usual move the R supports , is not available in the near future. To have a companion to e4, Wh needs to play f4, & the R is required on the f file. If Wh wants to tsrget d5 ( & note, the N, if held in reserve, could have gone to c3 after Bl's early e5) then there is an alternative route} (8. Nc4 O-O 9. Ne3 (9. a4 {leaving the N is situ is attractive- the position has occurred in some 150 games, including ones by GMs} )) (8. c3 {700 games, prepares to open the centre in case Bl is considering f5} ) 8... O-O 9. Nf1 {the main idea, but scores only 25% for Wh. others don't fare much better} (9. c3 {27%}) (9. a4 {22%}) (9. h4 {2-0 after Bg4; but f5 nets Bl a win & a draw ( though these 4 games not played by any strong Wh players)}) 9... f5 {GMs are featured on the Bl side, but not on the Wh side with that R on e1} (9... h6 {a useful preparatory move, keeps both Ns & Bs away }) (9... d5 {Bl can happily advance in the centre, with Wh only getting 27%}) 10. Bg5 {the B removes a potential K side attacker} (10. exf5 {main,3 draws & 3 Bl wins}) 10... h6 (10... f4 $1 $17 {Stockfish9} 11. gxf4 exf4 12. c3 h6 13. Bxe7 Qxe7 14. d4 cxd4 15. Nxd4 Nxd4 16. cxd4 Be6 17. Qd3 g5 {Rieger-Reis, Landesliga Nord, Bayern 2000,0-1; Bl has 2 useful Bs & a pawn advance against Wh's weakened K side. ( the N is still not looking happy on f1}) 11. Bxe7 Qxe7 12. Ne3 (12. Nh4 Qf7 13. exf5 gxf5 14. Ne3 (14. Bf3 Ne7 15. Bh5 Qf6 16. Qe2 f4 17. Nd2 $11 {Stockfish9}) 14... Be6 15. Bh3 Ne7 16. c3 Rae8 17. Qe2 $11 { Stockfish9; although in strange looking positions, the Wh pieces are actively placed to counter Bl attempts at in vasion}) 12... f4 $17 13. Nd5 {remember it could have got here 3 moves earlier via c3} Qf7 14. Qe2 (14. c3 {looks much safer}) 14... Bg4 $17 (14... fxg3 {initial late night analysis by David & Rudy thought this could have won a piece for Bl, but Houdini & Stockfish soon dispell this idea} 15. fxg3 Bg4 16. Rf1 $11 Nd4 17. Nxd4 $16 Bxe2 18. Rxf7 cxd4 19. Rxb7 $16) (14... g5 $17 {Stockfish9}) 15. gxf4 Nd4 {doesn't achieve much, as the N will need to retreat from here} (15... exf4 {Rudy & Stockfish9} 16. c3 g5 17. h3 Bd7 $19 {a pawnroller on the K side will expose the Wh Kas the Wh pieces will be driven back, & the Bl ones come in}) 16. Qd1 Ne6 {hoping to force open the f file, but Wh escapes via a tactic} (16... exf4 17. c3 Nc6 18. Ng5 Qd7 19. Bf3 Bxf3 20. Nxf3 g5 21. Kh1 $17 {Stockfish9Wh has gained use of the g file but swapped off a key protector , the B}) (16... Bh5 17. c3 Nc6 18. Kh1 $17 Ne7 19. Nxe7+ Qxe7 20. Qb3+ Kh8 21. f5 gxf5 22. Nd2 f4 23. Bf3 Bf7 24. Qd1 Qh4 25. Qe2 Bf6 26. Rg1 h5 27. Nc4 Be7 28. a4 Rg8 $11 {Stockfish9}) 17. Nxe5 $1 Bxd1 (17... Bxe5 18. Qxg4 Nxf4 19. Nxf4 Bxf4 (19... Qxf4 20. Qxf4 (20. Qxg6+ Kh8 21. Qg3 Qd2 22. Qh3 Rf6 23. Kh1 Rg8 $11) 20... Rxf4 21. c3 Raf8 22. Re2 $14) 20. c3 $11 {Stockfish9; Bl control the Bl squares , so the extra Wh pawn will be difficult to advance} h5 21. Qh3 Be5 22. Re2 Kg7 23. Rd1 Qf6 $11) 18. Nxf7 Rxf7 (18... Bxc2 19. f5 (19. Nxd6 Bxb2 20. Rab1 Bxb1 21. Rxb1 Bd4 22. f5 gxf5 23. exf5 Ng5 24. h4 Nf7 25. Nb5 Rad8 26. Nxd4 cxd4 27. Nf4 Ne5 28. Ne6 Nxd3 29. Nxd8 Rxd8 30. Rxb7 Nf4 $11 {Stockfish9}) 19... Kxf7 20. fxe6+ Kxe6 21. Nc7+ Kd7 22. Nxa8 Rxa8 23. Bh3+ Kc7 24. Re3 Bxb2 25. Rae1 Bd4 26. Rg3 g5 $11 { Stockfish9}) 19. Raxd1 Nxf4 20. Nxf4 Rxf4 21. c3 $14 Raf8 22. Re2 b6 {weakens the Q side for possible later K entry} (22... h5 $5 23. d4 cxd4 24. cxd4 R8f7 25. e5 Re7 26. e6 Rxd4 27. Rxd4 Bxd4 28. Bxb7 Kf8 29. Bd5 Rc7 30. b4 Ke7 31. Kg2 $14) 23. d4 R8f7 (23... cxd4 24. cxd4 Bf6 25. Rc2 Bh4 26. Rdd2 Kg7 27. e5 dxe5 28. dxe5 Re8 29. Rd7+ Re7 30. e6 Kf6 31. Bd5 (31. Rcc7 Bxf2+ 32. Kh1 Bc5 $11) 31... Rxd7 32. exd7 Ke7 33. Bc6 Rd4 $14 (33... a6 $14 {Stockfish9})) 24. e5 (24. dxc5 dxc5 25. e5 $16 {Stockfish9}) 24... Re7 25. dxc5 dxc5 (25... Bxe5 26. cxb6 axb6 27. Bd5+ Kg7 28. h3 g5 $14 {Stockfish9}) 26. e6 (26. Rd8+ Kh7 ( 26... Rf8 27. Bd5+ Kh7 28. Rxf8 Bxf8 29. f4 $18) 27. e6 Bf6 28. Bc6 Bg5 29. Ra8 Rf5 30. Kg2 Kg7 31. Bd7 a5 32. Rb8 Rd5 33. Bb5 Rd6 34. Bc4 $18 Bc1 35. a4 g5 36. Kf3 h5 37. h3 Kg6 38. Rh8 Kg7 39. Rc8 Rd1 40. Ke4 h4 41. Rb8 Rd6 42. Kf5 Bf4 43. f3 $18 {Stockfish9} Bc1 44. Re4 Bf4 45. Rxf4 gxf4 46. Ke5 Rc6 47. Bd5 Rcc7 48. Kd6 Ra7 49. Rd8 Kf6 50. Rf8+ Kg7 51. Rxf4 {& Wh keeps picking up stray pawns while the Bl Rs are tied down by the e6 pawn}) 26... Kf8 $2 { it ends suddenly} (26... Bf6 {one of several attempts in pm analysis by various people to save the game by blockading the pawn- best try (Stockfish9 & Komodo11)} 27. Rd7 Kg7 28. Red2 b5 29. Bc6 b4 30. Kg2 Rf5 {Stockfish9 not coming up with quick wins, trying nudging} 31. Bb5 Re5 32. Bc4 Re4 33. Bd5 Re5 34. cxb4 cxb4 35. Bb3 a5 36. f4 Re3 37. Bd5 Bh4 38. b3 Rxd7 39. exd7 Bd8 40. Bc4 g5 41. Rd6 gxf4 42. Rc6 Re7 43. Be6 Kf8 44. Kf3 Rg7 45. Kxf4 Rg6 46. Rc8 Ke7 47. Bg4 Rd6 48. Ke3 Rd5 $14 {Stockfish9 nudged}) (26... Rf8 {Rudy} 27. Rd7 (27. Re4 $18 {Stockfish9 & Komodo11}) 27... Bf6 (27... Rxd7 28. exd7 Bf6 29. Re8 Bd8 30. Bd5+ Kg7 31. f3 {further attempt on way home- Bl has stopped the pawn, but his pieces are so passive that Wh can just march the K up the board & capture Bl's Q side pawns}) 28. Red2 Kg7 29. Rxe7+ Bxe7 30. Rd7 Kf6 31. Bd5 Rd8 {holds for Bl}) 27. Rd8+ (27. Rd8+ Re8 28. e7+ Kf7 29. Bd5+ (29. Rxe8 { is even quicker according to Stockfish9}) 29... Kf6 30. Rxe8) 1-0 [Event "Dyfed League: SteyntonB-Aberystwyth"] [Site "?"] [Date "2018.04.11"] [Round "?"] [White "Hardman, Dan"] [Black "Evans, Gwyn"] [Result "1-0"] [ECO "B23"] [WhiteElo "1246"] [BlackElo "1429"] [Annotator "Rudy"] [PlyCount "87"] [EventDate "2018.04.12"] 1. e4 c5 2. Nc3 Nc6 3. f4 (3. g3 {alternative}) 3... e6 4. Nf3 Bd6 {unusual, luring pawns forward to undermine later} (4... d5 {main}) 5. e5 (5. d3) 5... Bc7 (5... Bb8 6. Bb5 (6. d4 cxd4 7. Nxd4 d6 8. Nxc6 bxc6 9. exd6 Qxd6 10. Be3 Nf6 {Le Clanche-Guidal, FRA ch tm, Bretagne 2003,0-1}) 6... Nge7 7. O-O a6 8. Bxc6 Nxc6 9. Ne4 d5 10. exd6 Bxd6 11. d3 {Urbaez Capote-Romagnone, Porlamar op 2011,1-0}) 6. Bc4 (6. Bb5 Nge7 {1 Wh win, 2 Bl wins}) 6... Nge7 (6... d5 7. exd6 Bxd6 8. d3 {3 Wh wins, 3 draws, 3 Bl wins} Nf6 9. O-O O-O 10. Ne4 Be7 11. Qe1 (11. Kh1) 11... b6 12. c3 Bb7 13. Qe2 Qc7 14. Bd2 Rad8 15. Rad1 a6 16. Bb3 Rd7 17. Bc1 {Udovicic-Saric, CRO ch U19, Vinkovci 2017,1-0}) 7. O-O O-O $11 8. Qe1 (8. Ne4 d5 9. exd6 Bxd6 10. d3 $11 {Komodo11}) 8... d6 (8... Nb4 9. Qd1 Nf5 10. d3 $11 {Komodo11}) 9. exd6 Bxd6 10. Ng5 (10. d3 $11) 10... h6 11. Nge4 Bc7 (11... Nd4 $15) 12. d3 Nd4 13. Qf2 Nef5 (13... a6 14. a4 Nec6 $15 {Komodo11}) 14. Nb5 (14. g4 Nh4 $15) (14. Nxc5 {is a risky pawn to take} Qe7 15. b4 a5 16. N3e4 axb4 17. Bb2 b5 18. Bb3 Nxb3 19. axb3 Rxa1 20. Rxa1 Bb6 21. d4 Rd8 $15 { Komodo11}) 14... Bb6 (14... Nxb5 $1 15. Bxb5 a6 16. Bc4 b5 17. Bb3 c4 18. dxc4 Bb7 19. Ng3 Nh4 (19... bxc4 20. Nxf5 cxb3 21. Nd4 bxc2 22. Nxc2 Rc8 23. Be3 Qd5 $17) 20. c5 Nxg2 21. c3 Nh4 22. Qe2 Qd7 $17 {Komodo11}) 15. Nxd4 Nxd4 (15... cxd4 16. Ng3 $11) 16. Be3 (16. a4 $14) 16... f5 (16... Nf5 17. Bxc5 Bxc5 18. Nxc5 $14 {Komodo11}) 17. Nc3 (17. Nxc5 Bxc5 18. c3 Qd6 19. cxd4 Bb6 {Komodo11- wins a pawn, but scarcely one that can be held}) 17... Bc7 18. Rac1 (18. a4 $14 ) (18. Na4 b6 19. b4 Qd7 20. bxc5 b5 21. Bxd4 bxc4 22. Nb2 cxd3 23. Nxd3 $16 { Komodo11}) 18... Qf6 19. Ne2 (19. b4 b6 20. bxc5 bxc5 21. Na4 Rb8 22. c3 Nc6 23. Nxc5 $18 {Komodo11, the c5 remains a vulnerable point in Bl's position}) 19... Nxe2+ 20. Qxe2 b6 $11 21. Qf3 Bd7 (21... Rb8) 22. c3 Kh8 23. d4 b5 24. Bb3 (24. Qb7 $5 Rfc8) 24... c4 25. Bc2 Bb6 {Bl has a backward pawn on e6, but in such a blocked position , without Ns, its difficult to exploit} 26. Rfe1 Rac8 27. Qf2 Bc6 28. Bd1 Qg6 29. Bf3 Bd7 $6 {not a good idea, retreating & leaving the Wh B in control of the diagonal} (29... Bd5 $11 {if Wh exchanges, then the e6 weakness dissapears & Wh is left unable to get d5 in, to liberate his bad QB}) 30. Rcd1 (30. d5 $16 {Komodo11}) 30... a5 31. d5 Bxe3 32. Qxe3 ( 32. Rxe3) 32... exd5 33. Rxd5 Rce8 34. Re5 Rxe5 (34... Kh7 {its often better to let the opponent do the exchanging, as doing so brings up units from the rear}) 35. fxe5 $16 {the advancing pawn can be dangerous, as seen in board 2 alongside} f4 36. Qe2 (36. Qd4 Be6 37. Qb6 Qe8 38. Qxa5 $18 {Komodo11}) 36... Bh3 {there is no real threat here, Bl should instead stop the pawn from advancing further, though that is far from easy} (36... Be6 37. Qd1 Qd3 38. Be4 Qd8 39. Qd4 Kg8 40. Rd1 Qxd4+ 41. cxd4 Kf7 42. d5 Bg4 43. Rd4 Re8 44. d6 Ke6 45. Bc6 Rb8 46. d7 Ke7 47. Bxb5 Be6 48. Kf2 $16) (36... Bc6 37. e6 Bxf3 38. e7 Re8 39. Qxf3 Qb6+ 40. Kf1 Qd6 41. Qe4 Qd3+ 42. Kf2 Qxe4 43. Rxe4 Kg8 44. h4 g5 45. hxg5 hxg5 46. Kf3 Kf7 47. Kg4 $18 {will be zugzwang shortly}) 37. e6 $18 Bxg2 $2 {a miscalculation} 38. Qxg2 (38. Bxg2 {also wins, as Bl has no time for } f3 39. e7 $18) 38... Qxg2+ 39. Kxg2 Re8 40. Bc6 (40. e7 b4 41. Bc6 {wins quickly}) 40... Re7 41. Bxb5 g5 42. Kf3 Kg7 43. h3 Kf6 44. Bxc4 1-0

Monday, 2 April 2018

Drawing Ahead

At last, with the Dyfed League season approaching its climax, Aberystwyth's run of wins is over. We are not complaining, though, as a draw with Cardigan A after our win over them in the first leg only consolidates our lead. Here is team captain Rudy's summary of the match, which was played at Brynamlwg on 20 March.

Having managed a last-minute defeat of Cardigan in the first leg of the League, the Aberystwyth team strategy was keep the draw in hand on all boards, and push for more if possible. On Board 1, Brendan tried to keep very active by opening things up. This led to an unbalanced position, whuch Howard Williams could have won - a blunder that might have been a Black win was missed, then, despite engines being clear about a win for Cardigan, time pressure produced a repetition. On Board 2, preparation gave Rudy the chance to gain a persistent pressure to give Iolo a taste of what he does to others, but not enough to gain more than the desired draw. On Board 3, Adam got a promising position against Tony, but it petered out to a draw. Julie got a good position against Howard Leah and Black should have barricaded earlier. As it was there could have been a White breakthrough, but then it settled to equality. Result, Aberystwyth got its four draws

[Event "Dyfed League: Aberystwyth-CardiganA"] [Site "?"] [Date "2018.03.20"] [Round "?"] [White "Williams, AH."] [Black "Durand Le Ludec, Brendan"] [Result "1/2-1/2"] [ECO "A57"] [WhiteElo "2325"] [BlackElo "2183"] [Annotator "Rudy"] [PlyCount "89"] [EventDate "2018.03.21"] 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 (4. Nf3 g6 5. Qc2 d6 6. e4 Nbd7 7. cxb5 Bg7 8. Nc3 O-O {Williams-Morcom, Dyfed League 2017,1-0}) 4... a6 5. b6 (5. bxa6 Bxa6 (5... g6 6. Nc3 Bxa6 7. e4 Bxf1 8. Kxf1 d6 9. Nf3 Bg7 10. g3 Nbd7 11. Kg2 O-O {Bauche-Durand Le Ludec, Avoine op 2017, 1-0}) 6. Nc3 d6 7. Nf3 g6 8. g3 { Williams- Rees, WCC 2003,1/2-1/2}) 5... d6 6. Nc3 g6 7. Nf3 Bg7 8. e4 O-O 9. Be2 Bg4 (9... Nbd7) (9... Qxb6) 10. Nd2 Bxe2 11. Qxe2 Nbd7 12. a4 (12. b7 Ra7 13. O-O Ne8 14. Nc4 Ne5 15. Na5 Nf6 16. b8=Q Qxb8 17. f4 { Mikhalevski-Hendricks, Dieren op 1996,1-0}) (12. O-O Nxb6 13. a4 Ne8 14. Rd1 Nc7 15. a5 Nd7 16. Nc4 Nb5 17. Qd3 Ne5 18. Nxe5 Bxe5 19. Nxb5 axb5 20. Qxb5 Qb8 21. Qe2 Qb3 {Chiong-Shalumov, Dos Hermanas blitz 2003,1-0}) 12... Qxb6 { Komodo11} (12... Nxb6 13. a5 Nbd7 14. O-O Ne8 15. Nc4 Nc7 16. Na4 Nb5 17. Nab6 Ra7 18. Be3 e5 19. dxe6 fxe6 20. Nxd7 Qxd7 21. Rad1 Qc6 22. Qd3 Rd7 23. Nb6 Rc7 24. Qc4 Re8 25. Rd2 Bd4 {Ktyztofiak-Brzeski,Kochan mem op, Koszalin 2006,1/2-1/ 2}) 13. Nc4 Qc7 $11 (13... Qb4 $11 {Komodo11}) 14. a5 Rfe8 15. Bf4 (15. O-O) 15... Nh5 16. Be3 e6 {challenging, but also committal} (16... Rab8 $11 { Komodo11}) 17. O-O exd5 (17... Bxc3 18. bxc3 exd5 19. exd5 f5 20. Qd3 Ne5 21. Nxe5 Rxe5 22. c4 Rae8 23. Bd2 Re4 24. Rab1 Qe7 25. Rb6 Rd4 26. Qe3 Qf8 27. Qc3 f4 28. Bc1 Qe7 29. Rxa6 Qe2 30. Qf3 Qxf3 31. gxf3 Rd8 32. Bb2 Rxc4 $14 { Komodo11}) 18. Nxd5 $16 Qc6 19. Qd3 (19. f3 $16 {Komodo11}) 19... Ne5 (19... Nhf6 20. Rfd1 (20. Rad1 Nxd5 21. Qxd5 Qxd5 22. Rxd5 Rxe4 23. Nxd6 Ra4 $11 ( 23... Rb4 $11)) 20... Ng4 21. f3 Nxe3 22. Qxe3 Rab8 23. Qd2 $14 {Komodo11}) 20. Nxe5 Bxe5 (20... Rxe5 21. f3 $16) 21. Nb6 (21. f4 Bxb2 (21... Bg7 22. f5 $16) 22. Rab1 Bg7 23. Rb6 Qa4 (23... Qc8 24. Rxd6 $16) 24. Nc7 Rxe4 25. Nxa8 Rxe3 26. Qxd6 Bd4 27. Kh1 Kg7 $11 {Komodo11}) 21... Rad8 (21... Ra7) 22. Rab1 (22. f3) 22... Bf4 (22... Nf4 23. Bxf4 Bxf4 24. Nd5 Be5 25. Rfc1 Rb8 26. b4 Rb5 27. Rc4 $14 {Komodo11}) (22... Nf6 23. f4 Bd4 24. Bxd4 cxd4 25. Qxd4 Kg7 26. Nd5 Qc5 27. Qxc5 dxc5 28. Nxf6 Kxf6 29. b4 c4 30. e5+ Kf5 31. b5 axb5 32. Rxb5 Rb8 33. Rd5 Red8 34. Rxd8 Rxd8 35. g3 Ra8 36. Rc1 Rxa5 37. Rxc4 Ra2 $11 38. Rc7 Kg4 39. f5 Kf3 40. Rc3+ Ke4 41. fxg6 fxg6 42. Rc7 Ra1+ 43. Kg2 Ra2+ 44. Kh3 h5 45. e6 Kf5 46. e7 Re2 $11 {Komodo11} 47. Rc5+ Kf6 48. Rc6+ Kg5 49. Ra6 Kf5 (49... Rxe7 $11)) 23. Nd5 Bxe3 24. fxe3 $16 (24. Qxe3 f5 25. Rbd1 $16 {Komodo11} Rxe4 (25... fxe4 26. g4 Ng7 27. Nf6+ $16) 26. Qxe4 fxe4 27. Ne7+ $18) 24... Qc8 ( 24... Re5 25. Rbd1 Qb7 26. b4 cxb4 27. Rb1 $16 {Komodo11}) 25. h3 (25. b4 $18 { Komodo11 & Stockfish9} cxb4 (25... Qg4 26. b5 axb5 27. Qxb5 Qxe4 28. Qb7 Qe6 29. a6 $18 Rd7 30. Nc7 Qxe3+ 31. Kh1 Rf8 32. a7 Qe7 33. Rbe1 Qd8 34. a8=Q $18 { Stockfish9}) 26. Rxb4 Re5 27. Rb6 $18 {Komodo11}) 25... Re5 26. Kh2 (26. Rf3 Qb7 27. Rd1 Qxb2 28. g4 Ng7 29. Rdf1 $16 {Komodo11}) 26... Qe6 27. g4 (27. Qxa6 Rxd5 28. exd5 Qe5+ 29. Kg1 Qxe3+ 30. Rf2 Nf4 31. Rbf1 Nd3 32. Qb7 Nxf2 33. Rxf2 Qe8 34. a6 Rd7 35. Qb5 Re7 36. Qxe8+ Rxe8 37. b3 Ra8 38. Ra2 Kg7 $11 {Komodo11} ) 27... c4 (27... f5 28. gxf5 gxf5 29. Rg1+ (29. Rxf5 Rxf5 30. exf5 Qe5+ 31. Nf4 Nxf4 32. exf4 Qxf4+ 33. Qg3+ Qxg3+ 34. Kxg3 d5 $11 {Komodo11}) 29... Kh8 30. Qc3 Nf6 31. Nxf6 Qxf6 32. Rbf1 Rf8 33. exf5 Rf7 34. Rd1 d5 (34... Rxf5 35. Rxd6 $16) 35. Qxc5 Rxf5 36. Rg2 Qe5+ 37. Kg1 h5 $14 {Komodo11- still a complex set of moves to negotiate}) 28. Qd2 (28. Qc3 {this keeps up the persistant pressure that has been maintained ever since Bl sharpened up the game by opening up the e file while conceding Wh the powerful N on d5} Rxe4 29. Rbd1 Re5 30. e4 Ng7 31. Rf6 Rxd5 (31... Qd7 32. Rxg6 Qa7 33. Rf6 Rxe4 34. Rd2 $16 { Komodo11}) 32. Rxe6 Rxd1 33. Re7 Rc8 34. Rxf7 Kxf7 35. Qf3+ Ke7 36. Qxd1 Ne6 37. e5 dxe5 38. Qd5 Rb8 {other moves lose it seems} 39. Qxe5 Rb5 40. Qc3 Kd6 41. Qxc4 Rxb2+ 42. Kg3 Rb5 43. Qd3+ Kc6 44. Qe3 Nc5 45. Qe8+ Kd6 46. Qf8+ Kc6 47. Qf6+ Kd5 48. Qf7+ Kd4 49. Qxh7 $18 {Komodo11}) 28... Ng7 $14 29. Rf6 $2 { having finally dislodged the Bl N from its perch near the Wh K, Wh is overeager to occupy the f6 square} Qc8 $2 {& Bl misses his chance} (29... Rxd5 $1 {wins a N by detroying the anchor for the Wh R} 30. Qxd5 (30. Rxe6 Rxd2+ { is even worse}) 30... Qxf6 $19 {realised by both in the pm analysis}) 30. Rbf1 Rf8 31. Rxd6 $18 Re6 32. Rxe6 (32. Rb6) (32. Nf6+ Rxf6 (32... Kh8 33. Nd7 { wins more material, either an exchange or the f pawn}) 33. Rdxf6 $18) 32... Qxe6 33. Nf6+ (33. Qd4) 33... Kh8 34. Qd4 Qe7 35. Nd5 (35. Qxc4 $5 Qe5+ 36. Kg2 Nf5 37. exf5 Qxb2+ 38. Kg3 Qxf6 39. fxg6 Qd6+ 40. Qf4 Qxf4+ 41. Rxf4 hxg6 42. Rf6 $18 {Komodo11}) 35... Qd8 36. Qc3 (36. Nb6 Qe7 37. Rf4 f6 38. Nd5 Qd8 39. Qb6 $18 {Komodo11}) 36... Qd6+ (36... f5 37. gxf5 gxf5 38. Rg1 Rf7 39. Nf4 $18 {Komodo11}) 37. Kg2 Qc5 38. Rf6 Qb5 {Bl is struggling to keep his position together} 39. Rb6 Qe8 40. Qd4 (40. Qxc4 $18 h5 41. Nf6 {Bl is running out of moves} (41. Rxa6 $18) 41... Qc8 42. Qxc8 Rxc8 43. Rxa6 $18 {Komodo11}) 40... Qc8 41. Rf6 (41. Qc3) (41. Qe5) 41... h6 42. Qa7 (42. Nb6 Qe8 43. Nd7 Rg8 44. Rxa6 $18 {Komodo11- the simplest}) (42. Rb6 Qe8 (42... Kh7 43. Qe5 Qa8 44. Nf6+ Kh8 45. Qf4 g5 46. Qd6 $18) 43. Qxc4 $18 {Komodo11}) 42... Qe8 43. Qd4 Qc8 44. Qa7 Qe8 45. Qd4 {repeating moves in a won position- time shortage} 1/2-1/2 [Event "Dyfed League: Aberystwyth-CardiganA"] [Site "?"] [Date "2018.03.20"] [Round "?"] [White "Van Kemenade, R."] [Black "Jones, IC."] [Result "1/2-1/2"] [ECO "C24"] [WhiteElo "2015"] [BlackElo "2236"] [Annotator "Rudy"] [PlyCount "101"] [EventDate "2018.03.21"] 1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Nf3 d5 (4... Be7 5. O-O d6 6. c3 (6. Re1 O-O 7. Bb3 Nbd7 8. c3 Nc5 9. Bc2 Ne6 (9... Bg4 10. h3 Bh5 11. Nbd2 Ne8 12. g4 Bg6 13. Nf1 {Van Kemenade-Jones, Dyfed League 2012, 1/2-1/2}) 10. d4 Qc7 11. Nbd2 Rd8 12. Nf1 g6 {Watkin-Jones vs Jones, Dyfed League 2015, 1/2-1/2}) 6... O-O 7. Bb3 Nbd7 8. Nbd2 Qc7 9. Re1 d5 10. h3 {Van Kemenade-Jones, Dyfed Open 2013,0-1}) 5. Bb3 Bb4+ (5... Bd6 6. Nc3 (6. Nbd2 Nbd7 7. O-O O-O 8. Re1 Re8 9. Nf1 Nc5 10. Ng3 Nxb3 11. axb3 h6 {Bukacek-Jones, EU Seniors tm , 2015,1/2-1/2}) 6... dxe4 7. Nxe4 Nxe4 8. dxe4 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 Qxd2+ 11. Nxd2 Ke7 {White- Jones, EU Seniors tm 2016, 1/2-1/2}) 6. Bd2 (6. c3 Bd6 7. Nbd2 O-O 8. O-O Nbd7 9. Re1 Qc7 10. Nf1 dxe4 11. dxe4 Nc5 12. Bc2 Rd8 13. Qe2 {Ralphs-Jones,WCPL 2016,1/2-1/21}) 6... Bxd2+ 7. Nbxd2 Nbd7 (7... Bg4 {alternative}) 8. O-O O-O 9. Re1 Re8 10. d4 {Bl has a centre, but Wh is ahead in development, so destroy the centre & aim to give Bl a weak isolated QP.} exd4 (10... dxe4 $2 11. Ng5 Re7 12. Ndxe4 Nxe4 13. Rxe4 $16 {Bl has to worry about f7}) 11. exd5 Rxe1+ ( 11... c5 12. Rxe8+ Qxe8 13. d6 {is quite dangerous} (13. Qf1 Nb6 14. Re1 Qf8 15. Re5 Bd7 16. c3 {Urban-Polakovic,CZE ch corr 1989,1/2-1/2})) 12. Qxe1 cxd5 ( 12... Nxd5 13. Bxd5 cxd5 14. Nxd4 Nf6 15. Qe3 Qb6 16. Re1 {So-Torre, PGMA cup, Manila 2006,1/2-1/2}) 13. Nxd4 Nc5 14. Qe5 (14. c3 Bd7 15. N2f3 Qb6 16. Qd2 Ba4 17. Qc2 Bxb3 18. axb3 Re8 19. b4 Nce4 20. Re1 g6 21. h3 Kg7 22. Qc1 { Kasimdzhanov-Christiansen, Yerevan ol 1996,1-0}) (14. N2f3 Nce4 15. h3 a5 16. a4 Be6 17. Rd1 Qb6 18. Qe3 {Rublevsky-Safarli, Wld ch blitz, Berlin 015, 0-1}) (14. Qe3 Bd7 15. Re1 a5 16. c3 Qb6 17. Rb1 Re8 18. Qf3 Bg4 19. Qg3 Nxb3 20. axb3 Bh5 21. f3 {Schneider-Heinemann, Erfurt Young Masters 2017,0-1}) 14... Nxb3 (14... a5 15. Re1 Be6 16. c4 a4 17. Bc2 Qa5 18. Qe3 dxc4 19. Nxe6 Nxe6 20. Nxc4 Qb4 {Flores-Lorenzini, San Luis 2013,1/2-1/2}) (14... Qa5 15. Nf1 Nxb3 16. Nxb3 Qb6 17. Qd4 Qc7 18. Ne3 Be6 19. Nc5 b6 {Ruefenacht-Hess, Biel Masters 1983,1/2-1/2}) 15. axb3 $14 Bd7 (15... Qb6) 16. h3 (16. Qd6 {Komodo11; considered} Qf8 17. Qc7 Qc8 18. Qxc8+ Bxc8 19. b4 $14) 16... Qb6 17. c3 Re8 18. Qf4 a6 19. b4 (19. Nf1 h6 20. Ne3 Be6 21. b4 $14 {Komodo11}) 19... Qd8 { anticipating Ra5-c5 & Qc7} 20. N2f3 (20. Qd6 Qb8 (20... Bc8 21. Qxd8 Rxd8 22. b5 $16 {Komodo11}) 21. Qxb8 Rxb8 22. N2b3 Kf8 23. Nc5 Ke7 24. Re1+ Kd6 25. g4 $14 {Komodo11}) 20... Qb8 21. Qxb8 (21. Qd2 Ne4 22. Qd3 $11 {considered in pm analysis} Qd6 $11) 21... Rxb8 22. Re1 {looks like Wh should have kept Rs on, as his is more active, & Bl has no penetration square on the e file} (22. Ne5 Re8 23. Nd3 h5 (23... Ne4 24. Ra5 Nf6 25. f3 g5 26. Nc5 Bc8 27. Ra1 $16 { Komodo11}) (23... Kf8 24. Nc5 Rb8 (24... Bc8 25. b5 axb5 26. Nxb5 Ne4 27. Nxe4 dxe4 28. Nd6 $16) 25. g4 h6 26. Kg2 Bc8 27. f3 $16 Ne8 (27... Ra8 28. b5 Nd7 29. Nxd7+ Bxd7 30. Ra5 Be6 31. bxa6 Rxa6 32. Rb5 Ra7 33. Rb6 $16 {Komodo11}))) 22... Re8 23. Rxe8+ Nxe8 24. Ne5 Bc8 25. f3 Nd6 $11 26. b3 {not neccessary yet, } (26. Kf2 Nc4 $2 (26... g5 $11) 27. Nxc4 dxc4 28. Ke3 Kf8 29. Ke4 $1 {Komodo11 } Ke8 30. Kd5 {wins a pawn, as Bl has no protection againstthe advanced Wh K entry on the bl squares} b5 31. Kc6 Kd8 32. Kb6 h5 33. Nc6+ Ke8 34. Na7 Bf5 35. Kxa6 Bd3 36. Nxb5 Bf1 37. g4 Bxh3 38. gxh5 $18) 26... f6 27. Nd3 Kf7 28. Nf4 { Bl comes close to losing his d pawn , but still has resources} (28. g4 { prepares, but Bl has several defences} g5 (28... Bd7 29. Nf4 Bc6 (29... Nb5 30. Nxb5 Bxb5 31. Kf2 Bc6 32. Ke3 Ke7 33. Kd4 {and the Bl K can't leave the K side because of Nh5}) 30. Kf2 g5 31. Nfe6 Ke7 32. Nc5 Bb5 $11) 29. Kf2 f5) 28... Nf5 29. Nc2 {Nontheless the position remains much easier to play for wh ( who was almost an hour up on the clock, because Bl has to calculate all these forcing variations, while Wh can just choose to pile on the pressure} (29. Nxf5 Bxf5 30. Nxd5 (30. Ne2 Ke6 31. Kf2 (31. f4 Be4 32. Nd4+ Kd6 33. Kf2 h6 34. g3 h5 35. Ke3 Bb1 36. g4 hxg4 37. hxg4 Be4 38. b5 (38. c4 b6 39. cxd5 Kxd5 (39... Bxd5 40. Nf5+ Kd7 41. Nxg7 Bxb3 42. Kd4 Bd1 43. g5 fxg5 44. fxg5 Bg4 $11) 40. Ne6 Kxe6 41. Kxe4 b5 42. Kd4 Kd6 43. f5 Kc6) 38... a5 $11) 31... Ke5 32. Ke3 g5 33. Nd4 Bd7 {& Wh can't easily shift the K from e5- even a K on d6 will hold even if Wh gets a K to d4}) 30... Be6 31. Ne3 Bxb3 $15 {liberates the B}) 29... Be6 (29... g5) 30. g4 Ne7 31. Nd4 Bd7 32. Kf2 g5 33. Nd3 b6 (33... Nc6 34. Nxc6 Bxc6 35. Ke3 Bb5 $11 {looks like holding as well, but there are risks in giving Wh access to d4}) 34. f4 h6 35. Ke3 Ke8 36. f5 Kd8 37. Nf3 (37. c4 dxc4 38. bxc4 b5 (38... a5 39. b5 Kc7 40. Nb2 h5 41. Na4 hxg4 42. hxg4 Bc8 43. Nb3 Bb7 44. c5 Nd5+ 45. Kd4 $16 {Komodo11 nudged}) 39. c5 Nd5+ 40. Kf3 Kc7 41. Ne6+ Kc8 $11 {Wh has no further entry squares}) 37... Nc6 (37... Kc7 38. Kd4 Kd6 39. c4 Nc6+ 40. Kc3 dxc4 41. bxc4 Be8 42. c5+ bxc5 43. Nxc5 Nb8 44. Ne4+ Ke7 45. Kd4 h5 46. Kc5 Bc6 47. Nfd2 hxg4 48. hxg4 Ba8 49. Kb6 Nc6 $11 {Komodo11}) 38. h4 (38. b5 {Komodo11; considered} axb5 39. Nd4 Ne7 40. Ne1 b4 41. cxb4 Kc7 $11) 38... Kc7 (38... d4+ {Komodo11} 39. cxd4 (39. Nxd4 Nxd4 40. Kxd4 gxh4 41. Ke3 Kc7 42. Ne1 Bc6 43. Nf3 h3 44. Kf4 Bb5 45. c4 Bc6 46. Kg3 Kd6 47. Ne1 Ke5 48. Kxh3 Kd4 49. Kh4 Be8 50. b5 axb5 51. cxb5 Bxb5 52. Kh5 Be2 53. Ng2 Ke5 $11 { Komodo11; but this is the kind of endgame where its difficult to calculate all the consequences of the moves to be made}) 39... Ne7 40. hxg5 hxg5 41. Nd2 Nd5+ 42. Ke2 Kc7 $11 {Wh's extra pawn is thoroughly blockaded}) 39. hxg5 {angling for a chance to sac a piece on g5 to push a pawn through} (39. h5 Be8 40. Nd4 Kd6 41. Nxc6 Bxc6 42. Kd4 Bb5 {gets Wh nowhere}) 39... hxg5 40. Nd4 Ne7 (40... Kd6 $11) 41. Ne1 (41. Nf2 Ng8 42. Nh1 Kd6 43. Ng3 Nh6 44. Kf3 Nf7 45. Nh5 Ne5+ 46. Kg3 Ke7 $15 {Komodo11}) 41... Kd6 42. Nef3 Bc8 43. Ne2 {Wh was also looking at the implications of getting a N to a4 , hopefully to force b5, but most likely the B would take it.when a subsequent b5 would gibe Bl the c5 square for the N} Nc6 (43... a5 44. bxa5 bxa5 45. Ng3 Bd7 46. Nh5 Ng8 47. Kd4 Be8 48. Ng7 Bb5 49. Ke3 a4 50. bxa4 Bxa4 $11 {Komodo11- Wh's g4 pawn is vulnerable}) 44. Ng3 Bd7 45. Nh5 Ke7 46. Ng3 Be8 47. Ne2 Bf7 48. Ned4 Nd8 ( 48... Nxd4 {also draws, but why risk K access by Wh}) 49. Ne1 Kd6 50. Nd3 Be8 51. Kd2 {(draw?) There is no reason for Wh to venture upon more complex lines. most likely drawn, but where a single slip could be fatal.} (51. Nb2 Bd7 (51... a5 52. b5 Nf7 53. Na4 Kc7 54. Ne6+ Kb7 55. Ng7 Bxb5 56. Nh5 Bxa4 57. bxa4 b5 58. axb5 a4 59. Kd2 Kb6 60. Nxf6 Kxb5 61. Nxd5 Kc4 62. Ne3+ Kb3 63. c4 Nd6 64. Kc1 Ne4 $11 {Komodo11.}) 52. Na4 Kc7 $11 (52... Bxa4 53. bxa4 Nf7 54. Nf3 Nh6 55. Nh2 Ke5 {just worsens the Wh position &} 56. Nf3+ Kd6 57. Nh2 Ke5 {is repetition})) 1/2-1/2 [Event "Dyfed League: Aberystwyth-CardiganA"] [Site "?"] [Date "2018.03.20"] [Round "?"] [White "Haigh, A."] [Black "Watkin-Jones, A."] [Result "1/2-1/2"] [ECO "D03"] [WhiteElo "1928"] [BlackElo "1957"] [Annotator "Rudy"] [PlyCount "53"] [EventDate "2018.03.21"] 1. d4 Nf6 2. Bg5 d5 3. Nf3 (3. Bxf6 {has been Tony's invariable reply, though with a record of 2 wins, 5 draws & 3 losses in the databases. To avoid preparation, an offer to go to a more mainline Queen's Gambit}) 3... e6 4. e3 c5 (4... Be7 5. Bd3 (5. c4 O-O 6. Nc3 {transposes to main QGD})) 5. dxc5 (5. c3 {eg Carlsen-Xiong, Chess.com I o Man Masters, Douglas 2017,1-0}) 5... Bxc5 ( 5... Nc6) 6. c4 (6. Nbd2) (6. Bd3) 6... Qa5+ 7. Nbd2 Ne4 8. a3 $146 (8. Bf4 { Komodo11}) (8. cxd5 exd5 9. a3 Nxg5 10. Nxg5 Be7 11. b4 Qb6 12. Ngf3 a5 13. Qa4+ Bd7 14. b5 Bf6 15. Nd4 Na6 16. N2f3 Nc5 17. Qd1 a4 {Bilek-Zaitsev, Sochi 1963,0-1}) (8. Bh4 Bb4 9. a3 Bxd2+ 10. Nxd2 Qxd2+ 11. Qxd2 Nxd2 12. Kxd2 dxc4 13. Bxc4 Bd7 14. Rac1 O-O {Kiviaho-Nykopp, FIN ch tm 1988, 1/2-1/2}) (8. Bd3 Nxd2 9. Nxd2 dxc4 10. Bxc4 Bb4 11. Bf4 e5 12. Bg3 O-O 13. a3 Bxd2+ 14. Qxd2 Qxd2+ 15. Kxd2 Nc6 16. Ke2 $14 {Breskanu-Schankin, Ulyanovsk Povolje op 2015, 1-0}) 8... Nxg5 (8... dxc4 9. Bxc4 (9. Bd8 Kxd8 10. Bxc4 Ke7 11. b4 Bxb4 12. axb4 Qxb4 13. Rb1 Qc3 14. Rb3 Qa5 15. Rb5 $11 {Komodo11}) 9... Nxg5 10. Nxg5 Bxe3 11. fxe3 Qxg5 12. Qe2 O-O $15 {Komodo11}) 9. Nxg5 Qd8 (9... dxc4 10. Nge4 (10. Bxc4 Bxe3 $15) (10. Qf3 O-O 11. Qe4 g6 12. Qh4 h5 13. Nge4 Rd8 14. g4 Kf8 15. gxh5 Be7 16. Qh3 Qxh5 17. Qxh5 gxh5 18. Bxc4 $11 {Komodo11}) 10... Be7 11. Bxc4 O-O $15 {Komodo11}) (9... Qb6 10. cxd5 (10. Qf3 O-O 11. cxd5 Qxb2 12. Rb1 Qe5 13. Nge4 Nd7 14. dxe6 Qxe6 15. Bc4 Qg6 16. Nxc5 Nxc5 17. O-O $11) 10... Bxe3 11. Nge4 exd5 12. fxe3 dxe4 13. Qa4+ Nc6 14. Qxe4+ Be6 15. Bc4 O-O 16. Bxe6 fxe6 17. Qxe6+ Kh8 18. O-O-O Rfe8 $11 {Komodo11}) 10. Ngf3 O-O 11. cxd5 Qxd5 (11... exd5 $11) 12. Nb3 (12. Be2 Be7 13. O-O Bd7 $11 {Komodo11}) 12... Qxd1+ 13. Rxd1 Bb6 (13... Be7) 14. Be2 Bd7 15. Nbd4 Rd8 16. O-O (16. Bb5 $11) 16... a6 $11 17. Rd3 (17. Ne5 Ba4 18. b3 Be8 19. Bf3 Bc7 20. Nd3 Ra7 21. Rc1 b6 $11 {Komodo11}) 17... Nc6 18. Rfd1 Be8 19. Nxc6 Bxc6 20. Ne5 Rxd3 (20... Be4 { keeps the 2 Bs}) 21. Rxd3 Bb5 (21... Be4 22. Rb3 Bc7 23. f4 Bxe5 24. fxe5 Rc8 25. Rb4 Rc2 26. Bf3 Bxf3 27. gxf3 b5 28. a4 Rc5 29. f4 g5 30. axb5 axb5 31. Kf2 $11 {Komodo11}) 22. Rb3 Bxe2 23. Rxb6 Rd8 (23... Rc8 24. h3 Rc7 $11) 24. f4 ( 24. h3 f6 25. Nf3 e5 26. Rxb7 $14 {Komodo11}) 24... f6 25. Nf3 Bxf3 26. gxf3 Rd7 27. Kf2 $11 {(draw?)} 1/2-1/2 [Event "Dyfed League: Aberystwyth-CardiganA"] [Site "?"] [Date "2018.03.20"] [Round "?"] [White "Van Kemenade, J."] [Black "Leah, H."] [Result "1/2-1/2"] [ECO "B23"] [WhiteElo "1740"] [BlackElo "1467"] [Annotator "Rudy"] [PlyCount "62"] [EventDate "2018.03.21"] 1. e4 c5 2. Nc3 e6 3. f4 a6 4. Nf3 Nc6 5. a3 Qc7 6. d3 d6 7. Be2 Nf6 8. O-O Be7 9. Qe1 O-O 10. Bd1 Ne8 11. Ne2 (11. g4 $5 {Rudy}) 11... f5 {digging in} 12. Ng3 Nf6 13. c3 b5 14. Bb3 Na5 (14... c4) 15. Bc2 Ng4 16. h3 Nh6 17. Bd2 (17. Ng5 $16) (17. b4 Nc6 18. Be3 $16) 17... Qd8 (17... c4) 18. Rd1 (18. b4 Nc6 19. Qf2 $16) 18... Kh8 19. d4 cxd4 20. cxd4 (20. Nxd4) 20... Nc4 21. Bc1 (21. Bc3 d5 22. exd5 exd5 (22... Qxd5 23. Nxf5 Nxf5 24. Be4 Qd6 25. Bxa8 $16)) 21... Qc7 22. Bb1 (22. d5) (22. b3 Nxa3 23. Bd3 b4 24. Bb2 Nb5 25. Rc1 Qb7 26. Rf2 $14) 22... Bd7 $2 23. Ng5 (23. exf5 $18 {the e7 B is hanging}) (23. Nh5 g6 (23... Be8 24. Nxg7 Kxg7 25. b3 Nb6 26. d5 exd5 27. exf5 Bf6 28. Be3 $16 {Komodo11}) ( 23... Qd8 24. b3 Nb6 25. d5 exd5 26. Bb2 $18 {Komodo11})) 23... Rae8 (23... Qd8 24. b3 Nb6 25. d5 $18 {Komodo11}) 24. Nh5 (24. b3 {Rudy} Na5 25. Qe3 d5 $11 { Komodo11}) 24... Qd8 (24... d5 $11) 25. Qc3 (25. b3 $1 {Rudy; the K is on the long diagonal, so the B needs to take aim along it} Na5 (25... Nb6 26. d5 $18 ( 26. Qg3 $18)) 26. d5 $18 {Stockfish9 & Komodo11} Bf6 (26... exd5 27. Bb2 Bf6 28. Nxf6 Rxf6 (28... gxf6 29. Qh4 Kg7 30. Rxd5 Be6 31. Rd3 $1 (31. Nxe6+ Rxe6 32. Qg5+ Kh8 33. Qxh6 $18) 31... Qe7 32. Rg3 Bg8 33. e5 dxe5 34. Nxh7+ Kxh7 35. Bxf5+ Kh8 36. Qxh6+ Bh7 37. fxe5 fxe5 38. Bxe5+ Qxe5 39. Qxh7# {Stockfish9}) 29. Bxf6 gxf6 30. Qh4 fxg5 31. Qxh6 Re6 32. Qxg5 Qxg5 33. fxg5 fxe4 34. Rxd5 Nxb3 35. Ba2 Nc5 36. Rxd6 $18 Re8 37. Rd5 Be6 38. Re5 Kg7 39. Rf6 $18 { Stockfish9}) (26... e5 27. Ne6 Bxe6 28. dxe6 Nc6 29. exf5 Nxf5 30. fxe5 Qb6+ 31. Kh1 Ncd4 32. Bb2 d5 33. Nf6 $18 {Stockfish9} (33. g4 $18 {Stockfish9})) 27. Nxf6 Rxf6 28. dxe6 Bxe6 29. Nxe6 Rexe6 30. Bb2 Rf7 31. e5 d5 32. Qe3 Ng8 33. Bd4 g6 34. Qf3 Rd7 35. g4 $18 {Komodo11}) 25... Nf7 (25... d5 26. e5 Nf7 $11 { Komodo11}) 26. exf5 (26. d5 e5 27. Ne6 Bxe6 28. dxe6 Nh6 29. b3 Nb6 30. fxe5 Qc8 31. Qg3 Qc5+ 32. Kh1 Qxe5 33. Bf4 Qb2 34. Rf2 $18 {Ko odo11}) (26. Nxe6 Bxe6 27. d5 Bf6 28. Nxf6 Qxf6 29. Qxf6 gxf6 30. dxe6 Rxe6 31. b3 Nb6 32. exf5 Re2 33. Rfe1 $18 {Komodo11}) 26... exf5 27. h4 (27. d5 Bf6 28. Nxf6 Qxf6 29. Qxf6 gxf6 30. Ne6 Bxe6 31. dxe6 Rxe6 32. Bxf5 Re2 33. Bd3 Re7 34. b3 Ne3 35. Rfe1 Rfe8 36. Rxe3 (36. Bxe3) 36... Rxe3 37. Bxe3 Rxe3 38. Kf2 Re7 39. Rc1 Kg7 40. Rc6 Ra7 41. g3 $18 {Komodo11}) 27... Nxg5 (27... d5 $15 {Komodo11}) 28. hxg5 (28. fxg5 d5 29. b3 Nd6 30. Bf4 $14 {Komodo11}) 28... d5 $15 29. Qh3 g6 30. Ng3 Rf7 (30... Bd6 $19) 31. Rfe1 Bf8 $15 {(Draw?)} 1/2-1/2