[Event "Wijk aan Zee"] [Site "Wijk aan Zee"] [Date "2022.01.26"] [Round "10"] [White "Vidit, Santosh Gujrathi"] [Black "Praggnanandhaa, R...."] [Result "0-1"] [ECO "E36"] [WhiteElo "2727"] [BlackElo "2612"] [Annotator "Peter,Doggers"] [PlyCount "156"] [EventDate "2022.??.??"] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 d5 7. Bg5 c5 (7... h6 8. Bh4 c5 9. dxc5 d4 10. Qf3 Nbd7 11. O-O-O e5 12. e3 e4 13. Bxf6 Nxf6 14. Qf4 d3 {Mamedyarov,S (2767)-Piorun,K (2640) Warsaw 2021}) 8. dxc5 d4 9. Qf3 ({ In the fifth round, Pragg faced} 9. Qg3 Nbd7 10. Nf3 e5 11. Rd1 Re8 12. b4 a5 { Rapport,R (2763)-Praggnanandhaa,R (2612) Wijk aan Zee 2022}) 9... Nbd7 10. e3 h6 11. Bxf6 Nxf6 12. O-O-O e5 13. Ne2 d3 14. Nc3 Bg4 15. Rxd3 Qa5 (15... Qxd3 16. Bxd3 Bxf3 17. gxf3 {is very good for White.}) 16. Qg3 Qxc5 17. Rd2 Be6 $146 (17... Rac8 18. Bd3 Be6 19. Rhd1 Qa5 20. Kb1 Bxc4 21. Bxc4 Rxc4 22. Qf3 b5 23. Nd5 Nxd5 24. Qxd5 Re8 25. g3 a6 26. Qd7 {½-½ Woelfelschneider,P (2277)-Silva, R (2352) ICCF email 2017}) 18. b4 Qc8 19. Qxe5 Bxc4 20. Kb2 a5 21. b5 Bxf1 22. Rxf1 Qc4 23. Rc1 a4 24. Nb1 Qb3+ 25. Ka1 Rac8 26. Rxc8 Rxc8 27. Qf5 Qc4 28. Rd4 Qc7 29. g3 b6 30. Rxa4 Nd7 31. Re4 (31. Rd4) 31... g6 32. Qf4 Qc5 33. Qxh6 $2 { A miscalculation.} ({Better was} 33. Rb4 Qc1 (33... Qc2 34. Rb2) 34. Qd4 Nc5 35. Qd2 {but Black has counterplay with} Qf1) 33... Qxb5 $1 34. a4 ({Perhaps Vidit intended} 34. Rh4 {but then Black has} Qe5+ {and White must go back with} 35. Rd4 ({as} 35. Ka2 {is mate in three:} Rc2+ 36. Kb3 Qb2+ 37. Ka4 Nc5#)) 34... Qc6 35. Qf4 Nc5 36. Rc4 Rd8 $6 ({Winning was} 36... Ra8 $1 37. Nc3 b5 $1) 37. Rc2 $6 (37. Rb4) 37... Qh1 $6 ({Again the winning move was} 37... Ra8 $1 { because of} 38. Ra2 Nb3+ $1 39. Kb2 Qc1+ $1 40. Kxb3 Qxb1+ 41. Rb2 (41. Ka3 b5) 41... Qd1+ 42. Rc2 Rc8 43. Qe4 Qb1+) 38. Qb4 Nxa4 39. Rd2 ({In hindsight, Vidit should perhaps have gone for} 39. Qxa4 Ra8 40. Qxa8+ Qxa8+ 41. Kb2 { which might well be a fortress.}) 39... Rc8 (39... Ra8 $1) 40. Qe7 Qa8 $1 41. Ra2 b5 42. Qb4 Qh1 43. Ra3 Qxh2 44. Qd2 Qh5 45. f4 Qf5 46. Qd3 Qf6+ 47. Qd4 Qe7 48. Rb3 Ra8 49. Ra3 Rd8 50. Qe5 Qxe5+ 51. fxe5 Re8 52. Rb3 Rxe5 53. Na3 Nc5 54. Rxb5 Rxe3 55. Nc4 Re1+ 56. Kb2 Ne4 57. g4 Re2+ 58. Kc1 Nf2 59. g5 Kg7 60. Nd2 Re8 61. Kb2 Rc8 62. Rd5 Nd1+ $1 {En route to trade knights.} 63. Ka3 (63. Kb3 Rb8+ 64. Ka3 Nc3 {also trades the knights.}) 63... Ne3 64. Rd3 Nc4+ 65. Kb4 Nxd2 66. Rxd2 {This is won for Black because the white king is cut off so far away from the pawns.} Rc1 67. Ra2 Kg8 {Winning some time on the clock.} 68. Ra8+ Kh7 69. Ra2 Kg7 70. Ra5 Kf8 71. Ra7 Ke8 $1 {Using Zugzwang.} 72. Ra5 (72. Kb3 Rc5) (72. Kb5 Rg1) (72. Rb7 Rb1+) 72... Kd7 73. Ra6 Ke7 {And again!} 74. Ra2 Ke6 75. Ra5 Rf1 76. Ra6+ Ke5 ({Not falling for} 76... Kf5 $4 77. Rf6+) 77. Ra5+ Kf4 78. Kc3 Kg4 0-1 [Event "Wijk aan Zee"] [Site "Wijk aan Zee"] [Date "2022.01.26"] [Round "10"] [White "Esipenko, Andrey"] [Black "Van Foreest, Jorden"] [Result "1-0"] [ECO "C50"] [WhiteElo "2714"] [BlackElo "2702"] [Annotator "Peter,Doggers"] [PlyCount "119"] [EventDate "2022.??.??"] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. Nc3 h6 6. Be3 Bb6 7. Nd5 d6 8. h3 ( 8. O-O Be6 9. Nxb6 axb6 10. Bxe6 fxe6 11. c3 O-O 12. Re1 Qe8 13. Qb3 Nh5 { Dubov,D (2710)-Fressinet,L (2638) Online 2021}) 8... Bxe3 9. fxe3 Na5 $146 ( 9... O-O 10. O-O Na5 11. Nd2 Nxd5 12. Bxd5 c6 13. Bb3 Nxb3 14. Nxb3 Qg5 15. Qf3 Be6 {Muniz,H (1279)-Faris,R (1720) Sao Paulo 2022}) 10. Nxf6+ Qxf6 11. Bb3 Nxb3 12. axb3 O-O 13. O-O Qe7 14. Qe1 f5 15. exf5 Rxf5 ({Esipenko thought} 15... Bxf5 {was a bit better.}) 16. Qb4 c5 {Esipenko also wasn't sure about this.} 17. Qe4 Be6 18. Nh4 Rg5 {In hindsight, the decision that cost Van Foreest the game. This rook will remain stuck on g5 for a long time.} (18... Rxf1+ 19. Rxf1 Re8 {was quite playable.}) 19. Qf3 ({Esipenko had seen that} 19. Ng6 Qd7 20. Rxa7 Rb8 {is welcomed by Black, who will take on h3 next.}) 19... a6 20. e4 Rd8 21. Rf2 Kh7 22. Kh2 Qc7 23. Qe2 a5 24. Raf1 b5 ({Esipenko suggested} 24... Qe7 {not allowing the trade of rooks.}) 25. Rf8 a4 26. bxa4 bxa4 27. c4 Qe7 28. Qf3 Bg8 29. Rxd8 Qxd8 30. Qf8 Qa5 31. Rf2 Be6 32. Re2 $6 (32. Qxd6 $2 {would be wrong because of} Bxh3 $1 33. gxh3 (33. Kxh3 Qe1 {even loses}) 33... Qe1 34. Rg2 Qxh4 35. Qf8 {with a draw.}) ({However, strong was} 32. g4 $1 Qc7 (32... Qe1 33. Ng2 Qd1 34. Qe8) 33. Qe8 Bg8 34. Rf8 {and wins.}) 32... a3 33. bxa3 Qxa3 34. Qxd6 Bxc4 35. dxc4 Qg3+ 36. Kh1 Qxh4 37. Qxc5 Qf4 38. Qe3 Qf1+ 39. Kh2 Rg6 40. c5 Rc6 41. Rc2 Qd1 42. Qf2 Qd3 43. Qf5+ Rg6 44. Rf2 Qc3 $2 ({Black had to play} 44... Qg3+ 45. Kh1 Qe3 46. Rf1 Qd3 47. Rc1 Qd2 48. Rg1 Qc3 {and it's not easy to win this as White.}) 45. Rf3 Qxc5 46. h4 h5 47. Rg3 Qd6 48. Rg5 Qc6 49. g3 Qa6 50. Kh3 Qc6 51. Rxh5+ Kg8 52. Qxe5 Rd6 53. Qc5 Qd7+ 54. Qf5 Re6 55. Qd5 Qxd5 56. exd5 Re4 57. Rg5 Rd4 58. h5 Rd3 59. Kh4 Kf7 60. Rf5+ 1-0 [Event "Chess.com"] [Site "Chess.com"] [Date "2022.01.26"] [Round "10"] [White "Dubov, Daniil"] [Black "Grandelius, Nils"] [Result "0-1"] [ECO "B50"] [WhiteElo "2720"] [BlackElo "2672"] [Annotator "Bojkov,Dejan"] [PlyCount "164"] [EventDate "2022.??.??"] 1. Nf3 c5 2. e4 d6 3. Bb5+ Bd7 4. Bxd7+ Nxd7 5. c3 Ngf6 6. Qe2 e6 7. d4 cxd4 8. cxd4 {Let's quickly skip the opening, saying that the solid Rossolimo quickly led to an innocent-looking French pawn structure.} d5 9. e5 Bb4+ 10. Bd2 Bxd2+ 11. Nbxd2 Ng8 {At least innocent-looking up to here, when there came...} 12. O-O-O $146 {\"Very interesting! And it took me completely by surprise. This is Daniil Dubov: he is going long-castle whenever possible\" (Grandelius)} ({ White got a slight edge after the conventional:} 12. O-O Ne7 13. Rac1 O-O 14. Qb5 Nb6 15. Rc3 Nc6 16. a3 Rc8 17. Rfc1 h6 18. h3 a6 19. Qb3 Rb8 20. Qc2 { in the predecessor Riazantsev,A (2634)-Matlakov,M (2674) Warsaw 2021}) 12... Ne7 13. Kb1 Nc6 14. h4 {Dubov is not hiding his intentions at all. He wants to push all his pawns on the kingside and mate whenever the black king shows itself there. If not—well, he will have a kingside edge and potentially an open c-file.} Qb6 ({Definitely not castling into it yet.} 14... O-O 15. h5) 15. Qe3 Rc8 {Grandelius is somehow finding the most precise moves, gaining enough counterplay. But this comes at a price as he is burning loads of time on his clock.} 16. h5 h6 17. g4 Qb5 $1 {Just in time. The further advance of the white pawns is coming with a price, and Black is creating threats on his own.} 18. Rc1 $1 {Pinning the rook at once.} ({As, otherwise, the knight has interesting routes like} 18. g5 Ne7 $1) ({Or} 18. Rhg1 Nb4 $1) 18... O-O $1 { The rooks need to be defended to resume the threats!} 19. a3 $5 {This stops the Nc6-b4 maneuver and avoids the trade of the rooks.} ({In case of} 19. g5 Nb4 $1 {Black is just in time if he chooses the proper trades in the line} 20. gxh6 Nd3 21. Nb3 Rxc1+ $1 {Trading both the white rooks is mandatory!} ({ But not} 21... Nxc1 22. Nxc1 {when White would soon mate.}) 22. Rxc1 Nxc1 23. Nxc1 (23. hxg7 Kxg7 {is similar.}) 23... gxh6 24. Qxh6 Rc8 {And this is somehow balanced, e.g.} 25. Qg5+ Kf8 $1 26. h6 Qc4 {Yes, Black also has threats and this forces White into a passive defense} 27. Qd2 Qf1 ({Or even} 27... Kg8)) 19... Ne7 $1 {The ideal square for the knight. Time to offer the rooks swap once again.} 20. Nh4 ({As before} 20. g5 {is met with} Nf5) ({And} 20. Rhg1 Rxc1+ 21. Rxc1 Nb6 {will prepare Rf8-c8.}) 20... Nb6 21. Ka2 {Dubov is still trying to deviate from the threats, but he apparently starts to burn the bridges.} ({After} 21. f4 {Grandelius can proceed with the trades} Rxc1+ ({ Or he can search for counterplay with} 21... Nc4 $5 22. Nxc4 dxc4) 22. Rxc1 Rc8 ) 21... Nc4 22. Qb3 {Maybe here Dubov realized that he miscalculated a thing or two.} ({As in the line} 22. Nxc4 dxc4 $1 23. g5 c3 $3 {when it is Black who wins by force with tactical shots} 24. bxc3 Nd5 25. Qd2 Nxc3+ $1 26. Rxc3 Qd5+) 22... Qa6 {Black is playing for an attack now!} ({Although he had quite a decent choice with} 22... Qxb3+ 23. Nxb3 g5 $1) 23. Nhf3 {A sad retreat.} ({ However} 23. Rcd1 Nc6 {was even worse.}) 23... Rc6 {This is why Black avoided the trade of the queens, but as he was very low on time, Grandelius soon accepted a safe choice.} 24. Qd3 Qb5 25. Qb3 Qa6 26. Qd3 Rfc8 27. Rc3 {This only makes things worse.} ({It is still not convincing to go for} 27. g5 $5 Qb5 28. Qb3 {due to} Qa5 $1) ({But perhaps White should have gone in full passive mode with} 27. Nb3 Qb5 28. Rc3 a5 29. Rb1) 27... Nxd2 28. Qxd2 ({Black wins too many pawns in the line} 28. Qxa6 bxa6 29. Nxd2 Rxc3 30. bxc3 Rxc3 31. Nb3 Rc2+) 28... Rxc3 29. bxc3 Qc4+ {Now the white king is badly exposed.} 30. Kb2 Qb5+ 31. Ka2 Qc4+ 32. Kb2 Rc6 33. Qc2 Rb6+ (33... Qb5+ 34. Kc1) 34. Kc1 Ra6 35. Kb2 Rb6+ {Too bad that Grandelius was that low on time.} ({The win, however, was far from trivial} 35... Nc6 $1 36. g5 Rb6+ 37. Kc1 Qa6 $3 ({Or the equally hard, study-like maneuver} 37... Na5 38. gxh6 Nb3+ 39. Kd1 Na1 $3) 38. Kd2 ({ No time for} 38. gxh6 Qxa3+ 39. Kd2 Rb2) 38... Na5 $1 {and the threat of decisive infiltration with Rb6-b2! decides the outcome of the game.}) 36. Kc1 Qb3 {\"This decision was heavily influenced by my [lack of] time.\" (Grandelius)} 37. Qxb3 Rxb3 38. Kc2 Rxa3 39. Kb2 Ra4 40. Nd2 {Now White is threatening to resume the motion of his kingside pawns, even in the endgame.} Nc6 41. Nb3 b5 42. Rc1 Na5 43. Nd2 {A strange decision.} ({After the natural} 43. Nxa5 Rxa5 44. f4 Ra4 45. Rg1 a5 46. g5 {Dubov had all the chances to survive.}) 43... b4 44. cxb4 {It was not too late to enter the rook endgame once more.} ({Strong was} 44. c4 dxc4 45. Nxc4 Nxc4+ 46. Rxc4 a5 47. Rc8+ Kh7 { with the following beautiful counterplay} 48. d5 $3 exd5 49. Rf8 b3 50. Rxf7 Rb4 51. e6 a4 52. e7 Re4 53. Rf4 $1 {and White should once again survive.}) 44... Rxb4+ 45. Kc3 Nc6 {Now Black is once again winning.} 46. Kd3 ({White is naturally avoiding the knight endgame.} 46. Nf3 Rc4+ 47. Kb2 Rxc1 48. Kxc1 f6 { which should be a technical win for the second player.}) 46... Nxd4 {The next string of moves is quite forcing:} 47. Rc8+ Kh7 48. Rc7 a5 49. Rxf7 Nc6 50. f4 a4 51. Rc7 Rb6 52. Rc8 a3 53. Ra8 Nb4+ {And, Grandelius is once again short of time and rushes a bit.} ({The neat} 53... a2 $1 {threatening the same maneuver as in the game, would have won as} 54. Kc3 ({Or} 54. Ke3 Nb4) 54... Rb4 $1 { would mop up all the white pawns.}) 54. Kc3 Na6 55. Nb3 a2 56. Na1 Rb1 57. Nc2 {Seems to be White's last chance.} ({However, the rook endgame might have still worked} 57. Rxa6 $1 Rxa1 58. Kb2 Rf1 59. Kxa2 Rxf4 60. Rxe6 Rxg4 { Now White needs to see in advance the accurate counterplay} 61. Kb3 $3 { It is mandatory to activate the king.} ({Or else White loses to} 61. Rd6 Rh4 62. Rxd5 Rxh5) 61... Rh4 62. Kc3 Rxh5 63. Kd4 $1 {And the white passer, nicely supported by both the rook and the king, should yield White enough play.}) 57... a1=Q+ 58. Nxa1 Rxa1 59. f5 $1 {This breakthrough is obviously what Dubov was pinning his hopes on.} exf5 60. gxf5 Rc1+ $1 {But this spoiler keeps Grandelius in charge!} ({The Swedish GM correctly avoided} 60... Re1 61. f6 $1 gxf6 62. exf6) ({As well as} 60... Rf1 61. Rxa6 Rxf5 62. Kd4 $1) 61. Kd2 ({ Or another spoiler after} 61. Kd4 Rd1+ $1) 61... Rf1 62. f6 {The last chance!} Nc5 {The knight somehow survived.} 63. Ra7 Kg8 $1 ({Not} 63... Ne6 64. Re7) 64. Rxg7+ Kf8 65. Rc7 Ne6 66. Rb7 Ng5 {Not a bad move, but a more central square would have worked better.} (66... Nd4 $1 {would have been a neat win after, say,} 67. Rd7 ({Or} 67. Ke3 Nc6 $1) 67... Rf5 68. Rxd5 Nf3+) 67. Ke3 Rf5 { This, however, is a mistake, and Dubov, who had almost an hour more on the clock, gets a chance to survive once again.} ({Pushing the enemy king toward his own seems suicidal, and yes, in time-trouble all sorts of scary mating pictures appear, but the line} 67... Re1+ $1 68. Kf4 (68. Kd4 Nf3+) 68... Ne6+ 69. Kf5 Nd4+ 70. Kg6 Nc6 $1 {was just winning.}) 68. Rb8+ Kf7 69. Rb7+ Kf8 70. Rb8+ Kf7 71. Rb7+ Ke8 72. Re7+ $1 {That is the thing: this check now works for White!} ({Not} 72. Rb8+ Kd7) 72... Kf8 73. Kd4 Nf7 74. Kxd5 Rxh5 75. Ke4 Rg5 76. Kf4 {Alas, Dubov became careless and let the half-point fly away.} ({After } 76. e6 $1 Nd8 ({Maybe the Russian GM missed that in the line} 76... Nd6+ { he has the only move} 77. Kd3 $3 Rd5+ 78. Kc2 Re5 79. Rh7 $11) 77. Rh7 Nxe6 78. Rxh6 $11) ({even the neutral} 76. Re6 {would have been a draw according to the machine.}) 76... Nh8 $3 {Or maybe White simply missed this non-obvious move! The knight is never shy to step back in order to jump to a better square.} 77. Ke4 Ng6 78. Rh7 ({Or} 78. Re6 h5) 78... Rxe5+ 79. Kd4 h5 80. Rg7 Rg5 81. Rh7 Ne5 82. Rg7 Nf7 0-1 [Event "Wijk aan Zee"] [Site "Wijk aan Zee"] [Date "2022.01.26"] [Round "10"] [White "Caruana, Fabiano"] [Black "Rapport, Richard"] [Result "0-1"] [ECO "A19"] [WhiteElo "2792"] [BlackElo "2763"] [Annotator "Peter,Doggers"] [PlyCount "84"] [EventDate "2022.??.??"] 1. c4 e6 2. Nc3 Nf6 3. e4 c5 4. e5 Ng8 5. d4 ({More popular is} 5. Nf3) 5... cxd4 6. Qxd4 Nc6 7. Qf4 {Following an idea of Dubov's.} ({And here} 7. Qe4 { is almost exclusively played.}) 7... d6 8. Nf3 Nh6 9. exd6 $146 (9. Bd2 dxe5 10. Nxe5 Bd6 11. Nxc6 Bxf4 12. Nxd8 Bxd2+ 13. Kxd2 Kxd8 14. Bd3 Ke7 15. Rhe1 Rd8 16. Kc2 Ng4 17. f3 Nf6 {Dubov,D (2710)-Pichot,A (2630) Online 2021}) 9... Bxd6 10. Qg5 Qxg5 11. Bxg5 f5 12. O-O-O Bc5 13. Ne5 Nf7 14. Nxc6 bxc6 15. Be3 Bxe3+ 16. fxe3 Ke7 17. Be2 g5 18. Na4 h5 19. Nc5 h4 20. g4 Ne5 21. Rd4 $2 { A big mistake, which can be called a blunder at this level.} (21. Rhg1) 21... Nxg4 $1 22. Bxg4 e5 $1 {The point, Black wins a huge pawn.} 23. Rd2 fxg4 24. Nd3 Rh6 ({The engine finds another nice idea:} 24... Bf5 $5 {the point being} 25. Nxe5 Ke6 $1 26. Nxc6 (26. Nd3 Rad8 27. Nc5+ Ke5 {is beautiful centralization, after which the kingside majority will decide.}) 26... Be4 27. Nd4+ Ke5 28. Rg1 g3 29. hxg3 h3 30. Rh2 g4 {and White is completely dominated.} ) 25. Nxe5 Re6 26. Nxg4 Re4 27. Nf2 Rxc4+ 28. Rc2 Rxc2+ 29. Kxc2 Be6 {White got back the pawn but his knight is worse than the bishop and Black's two vs. one on the kingside is tough to defend against.} 30. Rg1 Rf8 31. Nd3 g4 32. Nf4 Bf5+ 33. Kd2 Rd8+ 34. Ke2 ({More tenacious was} 34. Kc3) 34... Kf6 35. b3 a5 36. Ke1 Ke5 37. Ng2 Rh8 38. Nf4 g3 39. Rg2 Be4 40. Rd2 h3 41. a3 Rd8 $1 { Many moves win, but this one is rather pretty.} 42. Rb2 Bf3 $1 0-1 [Event "Wijk aan Zee"] [Site "Wijk aan Zee"] [Date "2022.01.26"] [Round "10"] [White "Giri, Anish"] [Black "Duda, Jan-Krzysztof"] [Result "1/2-1/2"] [ECO "A18"] [WhiteElo "2772"] [BlackElo "2760"] [Annotator "Peter,Doggers"] [PlyCount "76"] [EventDate "2022.??.??"] 1. c4 Nf6 2. Nc3 e6 3. e4 d5 4. e5 d4 5. exf6 dxc3 6. bxc3 Qxf6 7. Nf3 ({ Deviating from the main line} 7. d4) 7... c5 8. Bd3 (8. d4 cxd4 9. cxd4 Bb4+ 10. Bd2 Bxd2+ 11. Qxd2 O-O 12. Bd3 Nc6 13. O-O Rd8 {Anand,V (2788)-Naiditsch,A (2689) Moscow 2009}) 8... Bd7 {Played after a seven-minute think, this move seems to have confused Giri.} 9. Be4 $6 {This seems to be the wrong move order as Black now can develop his knight to c6.} ({Slightly preferable is} 9. Rb1 Bc6 10. Qe2 Nd7 ({White does need to fear} 10... Bxf3 11. gxf3 Qe7 12. Be4 Nc6 {as he can try the pawn sacrifice} 13. d4 $5) 11. Be4 {but after} Bd6 $1 { Black also doesn't need to worry about a doubled pawn and is OK after} 12. Bxc6 bxc6 13. O-O O-O 14. d4 h6) 9... Bc6 10. Qc2 Bxe4 11. Qxe4 Nc6 12. Rb1 O-O-O { This turns out to be completely fine for Black.} 13. d4 Qg6 14. Qxg6 hxg6 15. Be3 f6 $146 (15... Be7 16. Ke2 Bf6 17. Rhd1 cxd4 18. cxd4 Rh5 19. d5 Ne5 20. dxe6 Rxd1 21. Rxd1 fxe6 22. Bxa7 Nxc4 {Javakhadze,Z (2417)-Stukopin,A (2574) Dallas 2015}) 16. Ke2 g5 17. h3 Be7 18. dxc5 {White's extra pawn isn't worth much. Some call it the Irish Pawn Center.} e5 19. Rbd1 Na5 20. Nd2 Rd7 21. Rb1 f5 22. f3 Rhd8 23. Rb2 Rd3 24. Rc2 Bf6 25. g4 g6 26. gxf5 gxf5 27. Rg1 e4 28. Bxg5 Bxg5 29. Rxg5 e3 30. Nb3 Nxc4 31. f4 Na3 32. Rc1 Nb5 33. Nd4 Rxc3 34. Rxc3 Nxc3+ 35. Kxe3 Nd1+ 36. Kd3 Nb2+ 37. Kc3 Nd1+ 38. Kc4 Nb2+ 1/2-1/2