Opposite Bishop Classic: Navara Misses Draw in Difficult Ending Against Adams

Время публикации: 21.07.2015 09:18 | Последнее обновление: 21.07.2015 09:18

In Biel, round one of the main event has been played. All three games featured real fights: Vachier-Lagrave - Eljanov and Wojtaszek-Rapport did not produce winners, but David Navara did not manage to hold a difficult defence in his game against Michael Adams. 

The English classic has won many opposite-coloured bishop endings in his career, the assessment of which hung between a draw and a win. Today's example will probably go into any collection of Michael's best endgames, if such should appear. 


43...Bd6 Analysis shows that this defence is possible. But perhaps it was simpler and easier to keep the bishop on the a7-g1 diagonal, so as to be able to attack the g3-pawn when necessary. 
43...Bb6! Then, for example:
44.Kxd2 Bf2 45.Ke2 Bxg3 46.Kf3 Be1 47.b6 (Not forced, but keeping the pawn on b5 does not help) 47...Ba5 48.b7 Bc7. White cannot break through. The only chance is to put the bishop on h3, the pawn on f5 and bring the king over to help the passed b-pawn, but as soon as the king gets to c6, its opposite number occupies e7 and closes the path. 

Going back to move 44, if 44.Bd1 Black saves himself with 44...Kf5! (45.Kxd2 Bf2).

Let us try a more cunning idea: 44.Kf3 Bc5. Now if 45.Bd1, then 45...Kf5, and after 46.Kg2 the simplest is 46...h4!, but he can also hold after 46...Kg6 47.Kh3 Bf2 48.Kh4 Kh6. White does not have 49.b6 Bxb6 50.Bxh5 because of 50...Bd8+.
And if 45.Kg2, then 45...Bb6 46.Kh3 Bf2 47.Kh4 Kg7 48.Bd1 Kh6!.

Of course, these variations are not all easy, but the main thing is to understand the drawing ideas. For example, sooner or later, White can reach such a position:

But Black is still holding.

44.Ke3 Bc7 Here too, 44...Bc5+ was possible, with the same ideas.
45.Bd1! But now 45...Bb6+ is already too late because of 46.Kxd2 Bf2 47.g4! - this is why with the bishop on d1, it is important to put the king on f5. After 47...hxg4 48.Bxg4 the ending is lost, alas.

45...h4? He could still hold the draw with 45...Kg6 with the idea of 46.Kxd2 h4, and White cannot win with the rook's pawn. After the piece sacrifice, Black holds by a tempo: 46.Bxh5+ Kxh5 47.Kxd2 Kg4 48.Ke3 Kxg3 49.f5 Kg4 50.f6 Kf5! (Bringing his king closer and at the same time shoulder-charging the enemy king) 51.f7 Bd6 52.Kd4 Ke6! with a draw.

46.Ke4 looks dangerous, but here too, after 46...Bb6 47.Ke5 (if 47.f5+, then not 47...Kg5? 48.Ke5, but 47...Kf6! 48.Bxh5 Bc7=) 47...Bf2 draws: 48.f5+ (48.Ke6 Bxg3 49.f5+ Kg7 50.b6 Kf8 ) 48...Kg7 49.f6+ (49.Kf4 h4 50.g4 [50.gxh4 Bxh4=] 50...h3 51.Kf3 h2 53.Kg2 Bg1 54.g5 Be3=) 49...Kf8 50.Kf4 Kf7. The exchange of pawns cannot be avoided, after which the passed pawn on d2 saves Black.

46.gxh4 (Now Black is lost) 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

After the game. Photo: Daniel King - twitter.com/DanielKingChess

Round two is at 15.00 Moscow time today.
All material on the event

[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 "48th Biel GM 2015"] [Site "Biel SUI"] [Date "2015.07.20"] [Round "1"] [White "Vachier Lagrave,M"] [Black "Eljanov,P"] [Result "1/2-1/2"] [WhiteElo "2731"] [BlackElo "2723"] [EventDate "2015.07.20"] [ECO "C67"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. Rd1+ Ke8 10. Nc3 Be7 11. Bg5 Bxg5 12. Nxg5 h6 13. Nge4 g5 14. b4 a6 15. a4 Ke7 16. a5 Nh4 17. Nc5 Ng6 18. f3 b6 19. Nd3 Bf5 20. Na4 Rhb8 21. Nab2 Rd8 22. Kf2 Rd4 23. Ke3 Rh4 24. h3 Ke6 25. c3 Nxe5 26. Nxe5 Kxe5 27. axb6 cxb6 28. Na4 b5 29. Nc5 Rc4 30. Ra3 Ra7 31. g4 Bg6 32. Nd7+ Ke6 33. Nc5+ Ke5 34. Nd7+ Ke6 35. Nc5+ Ke7 36. Rd4 Rxd4 37. Kxd4 Bc2 38. Ra2 Bd1 39. Ke3 Ra8 40. f4 f6 41. f5 h5 42. Ra1 Ba4 43. Nxa4 bxa4 44. Rxa4 hxg4 45. hxg4 Kd6 46. Kd4 Rh8 47. Rxa6 Rh4 48. b5 Rxg4+ 49. Kd3 Rg3+ 50. Kc4 Rg4+ 51. Kb3 Kc5 52. Rxc6+ Kxb5 53. Rxf6 Rf4 54. Rf8 g4 55. Rg8 Rxf5 56. Rxg4 1/2-1/2 [Event "48th Biel GM 2015"] [Site "Biel SUI"] [Date "2015.07.20"] [Round "1"] [White "Wojtaszek,R"] [Black "Rapport,R"] [Result "1/2-1/2"] [WhiteElo "2733"] [BlackElo "2671"] [EventDate "2015.07.20"] [ECO "D07"] 1. d4 d5 2. c4 Nc6 3. cxd5 Qxd5 4. e3 e5 5. Nc3 Bb4 6. a3 Bxc3+ 7. bxc3 Nf6 8. c4 Qd6 9. d5 Nb8 10. Ne2 O-O 11. Nc3 Bf5 12. a4 Na6 13. Ba3 Nb4 14. Be2 a5 15. O-O Rfe8 16. Rc1 c5 17. f3 Bd7 18. e4 Nh5 19. Nb5 Qh6 20. Rc3 Nf4 21. g3 Nh3+ 22. Kh1 Rac8 23. Bd3 Qg6 24. Bb1 h5 25. Qe1 Ng5 26. Re3 Bxb5 27. axb5 f6 28. f4 Nf7 29. Qe2 Nd6 30. Bb2 b6 31. h3 Rc7 32. Kh2 Rce7 33. f5 Qh7 34. Rg1 Kf7 35. g4 hxg4 36. Rxg4 Rh8 37. Reg3 Ke8 38. Bc1 Kf8 39. Kg2 Qh5 40. Bd2 Rh7 41. Bc1 Rh8 42. Bd2 1/2-1/2


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