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