David Navara: "I made the defence more difficult for myself, then miscalculated"

Время публикации: 21.07.2015 20:30 | Последнее обновление: 21.07.2015 20:30

David Navara spoke to our website about the ending of his game yesterday with Michael Adams in the first round of the competition in Biel.

"I understand well enough the idea of the​​ draw - wrote the Grandmaster - but unnecessarily made things more difficult for myself, and then miscalculated the forcing stage".

I knew that the opposite bishop position with white pawns on b7 and f5 was a draw even without the black pawn, you just do not let the white king get to g4, where he can use zugzwang to move to g8 and beyond. (Therefore, with pawn on f4 and king on g3, White wins, by occupying the key square g4 before advancing the pawn.)

I got confused by something completely different. With the pawn on b5 and pawns on f4-h5 on the kingside, White can first transfer the bishop to h3 and then bring the king to the queenside. I remember that in the game Aronian - Bacrot from the World Cup 2005, Black could have defended, but was not up to the task. I also remembered the defensive mechanism approximately. Only after the game did I learn that in the earlier game, the white pawn was not on b5, but on a6. In my game, moving the black king to the queenside gave a simple draw. After 44 ... Bc7?! I could still draw but it is not so simple. I calculated a forcing variation and missed the simple move 50.Kd5".

Below you can compare for yourself the two very similar endgame: Adams - Navara 2015 and Aronian - Bacrot 2005. The decade-old game had a white pawn standing on the a-file rather than the b-file, which probably complicates Black's defence. However, despite the same result, these two games very different: Bacrot resigned in a drawn position ...

[Event "48th Biel GM 2015"] [Site "Biel SUI"] [Date "2015.07.20"] [Round "1"] [White "Adams,Mi"] [Black "Navara,D"] [Result "1-0"] [WhiteElo "2740"] [BlackElo "2724"] [EventDate "2015.07.20"] [ECO "B91"] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 b5 9. Nd5 Nbd7 10. Nec3 Bb7 11. a4 Nxd5 12. Nxd5 O-O 13. axb5 axb5 14. Rxa8 Bxa8 15. O-O Nc5 16. b4 Ne6 17. h4 Bxd5 18. Qxd5 Nd4 19. c3 Ne2+ 20. Kh2 Nxc1 21. Rxc1 Qb6 22. Kg1 Rb8 23. Ra1 g6 24. Ra8 Rxa8 25. Qxa8+ Kg7 26. Bf1 Qc7 27. Qe8 Bf6 28. Bxb5 Qxc3 29. Bc6 Qf3 30. Qd7 g5 31. hxg5 Bxg5 32. Qxd6 Qc3 33. Kg2 Qb2 34. Qc5 Qd4 35. Qxd4 exd4 36. f4 Be7 37. b5 Bc5 38. e5 d3 39. Be4 d2 40. Bc2 f6 41. exf6+ Kxf6 42. Kf3 h5 43. Ke2 Bd6 44. Ke3 Bc7 45. Bd1 h4 46. gxh4 Kf5 47. Bc2+ Kg4 48. Ke4 Kxh4 49. Bd1 Bd8 50. Kd5 Kg3 51. f5 Kf4 52. Ke6 Ke4 53. Bc2+ Kd4 54. Kd7 Bb6 55. f6 Kc3 56. Bd1 1-0 [Event "FIDE World Cup"] [Site "Khanty Mansiysk"] [Date "2005.12.13"] [Round "6.2"] [White "Aronian, Levon"] [Black "Bacrot, Etienne"] [Result "1-0"] [ECO "D15"] [WhiteElo "2724"] [BlackElo "2725"] [PlyCount "100"] [EventDate "2005.11.27"] [EventType "k.o."] [EventRounds "7"] [EventCountry "RUS"] [Source "ChessBase"] [SourceDate "2006.04.04"] 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 a6 5. a4 e6 6. g3 dxc4 7. Bg2 c5 8. dxc5 Qxd1+ 9. Nxd1 Nc6 10. Be3 Nd5 11. O-O Nxe3 12. Nxe3 Bxc5 13. Nxc4 Ke7 14. Rac1 Bd7 15. Nfe5 Nxe5 16. Nxe5 Bd6 17. Nxd7 Kxd7 18. Bxb7 Ra7 19. Bc6+ Ke7 20. b3 Rb8 21. Rb1 f5 22. e3 Rc7 23. Bf3 Rc3 24. Be2 Rcxb3 25. Rxb3 Rxb3 26. Bxa6 Ra3 27. Bb5 Be5 28. Kg2 Ra1 29. Rxa1 Bxa1 30. a5 Be5 31. a6 Bb8 32. h4 Ba7 33. Kf3 Kf6 34. g4 h6 35. h5 g5 36. hxg6 Kxg6 37. gxf5+ exf5 38. Bf1 Kg5 39. Kg3 Kf6 40. Bg2 Bb6 41. Kh4 Kg6 42. Bc6 Bd8+ 43. Kg3 Bb6 44. e4 Kf6 45. f4 fxe4 46. Bxe4 Ke6 47. Kg4 Kf6 48. Bg2 Ba7 49. Bh3 Bc5 50. f5 Ba7 1-0
   


  


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