Author: Robert Hyatt
Date: 08:20:58 05/26/02
Go up one level in this thread
On May 26, 2002 at 08:36:08, Sune Larsson wrote:
>
> [D]k1r5/1p1b4/p1q1r2p/3pRpp1/PB1P4/1QP3P1/5RPP/6K1 b - - 0 36
>
> This is a position from the game GM Votava-IM Berg in the 8th round
> of the International Hamburg-ch. With only 4 moves to go before the
> 1st time control, Emanuel decides to set a little trap for his opponent
> with 36.-Tce8! Votava walks right into it with 37.Rfxf5 Rxe5 38.Rxe5 Rxe5
> 39.dxe5 Qb6+ 40.Kf1
>
> Test 1: Avoid this move sequence for white, starting with 37.Rfxf5.
>
>
> [D]k7/1p1b4/pq5p/3pP1p1/PB6/1QP3P1/6PP/5K2 b - - 0 40
>
> Now comes the point - creating a deadly passer and forcing a won
> pawn ending. 40.-a5! 41.Qxd5 axb4 42.Qxd7 b3 43.Qd3 b2 44.Qb1 Qb3
> 45.Ke2 Qxc3 46.Kd1 Qd4+ 47.Kc2 Qxa4+! 48.Kxb2 Qb5+ 49.Kc2 Qxb1+ 50.Kxb1
>
> Test 2: Find 40.-a5! and 41.-axb4
>
>
> [D]k7/1p6/7p/4P1p1/8/6P1/6PP/1K6 b - - 0 50
>
> This pawn ending is lost for white.
>
> Test 3: Steer into this ending with 47.-Qxa4+!
> Evaluate the above position as won for black.
>
I didn't have time to try the first two and have no idea if Crafty will find
them or not. But the last one is easy (for Crafty anyway):
2 0.03 ++ 47. ... Qxa4+!!
2 0.03 0.46 47. ... Qxa4+ 48. Kd3 Qb4
2-> 0.04 0.46 47. ... Qxa4+ 48. Kd3 Qb4
3 0.04 ++ 47. ... Qxa4+!!
3 0.04 -0.11 47. ... Qxa4+ 48. Kxb2 Qb5+ 49. Kc2
Qxe5
3-> 0.06 -0.11 47. ... Qxa4+ 48. Kxb2 Qb5+ 49. Kc2
Qxe5
4 0.07 -0.04 47. ... Qxa4+ 48. Kxb2 Qb5+ 49. Kc2
Qc4+ 50. Kb2 Qd4+ 51. Kb3 Qxe5
4-> 0.08 -0.04 47. ... Qxa4+ 48. Kxb2 Qb5+ 49. Kc2
Qc4+ 50. Kb2 Qd4+ 51. Kb3 Qxe5
5 0.10 -0.04 47. ... Qxa4+ 48. Kxb2 Qd4+ 49. Kb3
Qb6+ 50. Kc2 Qc7+ 51. Kb3 Qxe5
5-> 0.12 -0.04 47. ... Qxa4+ 48. Kxb2 Qd4+ 49. Kb3
Qb6+ 50. Kc2 Qc7+ 51. Kb3 Qxe5
6 0.23 -0.13 47. ... Qxa4+ 48. Kxb2 Qd4+ 49. Ka2
Qxe5 50. Qb6 Qd5+ 51. Ka3 h5
6-> 0.28 -0.13 47. ... Qxa4+ 48. Kxb2 Qd4+ 49. Ka2
Qxe5 50. Qb6 Qd5+ 51. Ka3 h5
7 0.42 -0.21 47. ... Qxa4+ 48. Kxb2 Qd4+ 49. Ka2
Qxe5 50. Qb6 Qd5+ 51. Ka3 h5 52. Qb2
7-> 0.48 -0.21 47. ... Qxa4+ 48. Kxb2 Qd4+ 49. Ka2
Qxe5 50. Qb6 Qd5+ 51. Ka3 h5 52. Qb2
8 0.91 -0.23 47. ... Qxa4+ 48. Kxb2 Qd4+ 49. Kc2
Qxe5 50. Qb6 Qe4+ 51. Kd1 Qc6 52. Qd8+
Ka7 53. Qa5+ Kb8
8-> 1.12 -0.23 47. ... Qxa4+ 48. Kxb2 Qd4+ 49. Kc2
Qxe5 50. Qb6 Qe4+ 51. Kd1 Qc6 52. Qd8+
Ka7 53. Qa5+ Kb8
9 1.69 -0.23 47. ... Qxa4+ 48. Kxb2 Qd4+ 49. Kc2
Qxe5 50. Qb6 Qe4+ 51. Kd1 Qc6 52. Qd8+
Ka7 53. Qa5+ Kb8 54. Qd2
9-> 2.09 -0.23 47. ... Qxa4+ 48. Kxb2 Qd4+ 49. Kc2
Qxe5 50. Qb6 Qe4+ 51. Kd1 Qc6 52. Qd8+
Ka7 53. Qa5+ Kb8 54. Qd2
10 3.91 -0.27 47. ... Qxa4+ 48. Kxb2 Qd4+ 49. Kc2
Qxe5 50. Qb6 Qe4+ 51. Kd1 Qd5+ 52.
Ke1 h5 53. Qg6 g4 54. Kf2
10-> 4.81 -0.27 47. ... Qxa4+ 48. Kxb2 Qd4+ 49. Kc2
Qxe5 50. Qb6 Qe4+ 51. Kd1 Qd5+ 52.
Ke1 h5 53. Qg6 g4 54. Kf2
11 11.30 -0.23 47. ... Qxa4+ 48. Kxb2 Qd4+ 49. Kc2
Qxe5 50. Qb6 Qe4+ 51. Kd1 Qd5+ 52.
Ke1 h5 53. Kf1 Qd1+ 54. Kf2 Qd2+ 55.
Kf1 Kb8 56. h3
11-> 14.24 -0.23 47. ... Qxa4+ 48. Kxb2 Qd4+ 49. Kc2
Qxe5 50. Qb6 Qe4+ 51. Kd1 Qd5+ 52.
Ke1 h5 53. Kf1 Qd1+ 54. Kf2 Qd2+ 55.
Kf1 Kb8 56. h3
12 38.63 -0.23 47. ... Qxa4+ 48. Kxb2 Qd4+ 49. Kc2
Qxe5 50. Qb6 h5 51. Kd3 Qd5+ 52. Ke3
g4 53. h4 Kb8 54. Kf2 Qd2+ 55. Kg1
12-> 45.01 -0.23 47. ... Qxa4+ 48. Kxb2 Qd4+ 49. Kc2
Qxe5 50. Qb6 h5 51. Kd3 Qd5+ 52. Ke3
g4 53. h4 Kb8 54. Kf2 Qd2+ 55. Kg1
>
> The whole game below.
>
>
>[Event "IHEM 2002"]
>[Site "Hamburg"]
>[Date "2002.05.25"]
>[Round "8.2"]
>[White "Votava, Jan"]
>[Black "Berg, Emanuel"]
>[Result "0-1"]
>[WhiteElo "2508"]
>[BlackElo "2514"]
>[PlyCount "116"]
>[EventDate "2002.??.??"]
>
>1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Bd3 Ne7 5. Nge2 c5 6. exd5 exd5 7. a3 Bxc3+ 8.
>Nxc3 c4 9. Be2 Nbc6 10. Bf3 Be6 11. Ne2 Nf5 12. c3 g5 13. Ng3 Nxg3 14. fxg3 h6
>15. O-O Qd7 16. Bh5 O-O-O 17. Be3 f5 18. Qd2 Qd6 19. Rae1 Rdf8 20. Qe2 Rf6 21.
>Bc1 Rhf8 22. Rf2 Bd7 23. Ref1 Kb8 24. Qd1 Ka8 25. Qd2 Ne7 26. Bd1 Be6 27. Bc2
>a6 28. b4 cxb3 29. Bxb3 Nc6 30. a4 Na5 31. Qa2 Rc8 32. Ba3 Qc6 33. Bb4 Nxb3 34.
>Qxb3 Bd7 35. Re1 Re6 36. Re5 Rce8 37. Rfxf5 Rxe5 38. Rxe5 Rxe5 39. dxe5 Qb6+
>40. Kf1 a5 41. Qxd5 axb4 42. Qxd7 b3 43. Qd3 b2 44. Qb1 Qb3 45. Ke2 Qxc3 46.
>Kd1 Qd4+ 47. Kc2 Qxa4+ 48. Kxb2 Qb5+ 49. Kc2 Qxb1+ 50. Kxb1 Kb8 51. Kc2 Kc7 52.
>Kd3 Kd7 53. h4 g4 54. h5 Ke6 55. Ke4 b5 56. Kd4 b4 57. Kc4 Kxe5 58. Kxb4 Ke4
>0-1
>
>Sune
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