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Subject: Re: Testposition endgame

Author: Mike Byrne

Date: 06:27:46 01/12/03

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On January 11, 2003 at 10:19:53, Eduard Nemeth wrote:

>The game end draw, but white hase a win position.
>
>
>[Event "London m"]
>[Site "?"]
>[Date "1831.??.??"]
>[Round "?"]
>[White "McDonnell,Alexander"]
>[Black "Fraser,George Brunton"]
>[ECO "C00"]
>[Result "1/2-1/2"]
>
>1. e4 e6 2. f4 d5 3. e5 c5 4. Nf3 Nc6 5. c3 Be7 6. Bd3 Nh6
>7. Bc2 Bd7 8. O-O f5 9. a3 c4 10. h3 Nf7 11. Qe1 g6 12. Kh1
>h6 13. d4 Qb6 14. Nbd2 Na5 15. Rb1 Nb3 16. Bxb3 cxb3 17. c4
>dxc4 18. Nxc4 Qc7 19. Ne3 Bb5 20. Rg1 Bd3 21. Ra1 Be4
>22. Bd2 g5 23. Rc1 Qd7 24. d5 Bxd5 25. Nxd5 Qxd5 26. Bb4
>Bxb4 27. Qxb4 a5 28. Qb6 O-O 29. Rgd1 Ra6 30. Qc7 Rc6
>31. Rxd5 Rxc7 32. Rxc7 exd5 33. e6 Nd6 34. Rd7 Ne4 35. Rxd5
>gxf4 36. Kh2 Ng3 37. Nd4 a4 38. Nb5 Re8 39. Nc7 Re7
>40. Rd8+ Kg7 41. Rd7 Kf8 42. Rd8+ Kg7 43. Rd7 Kf8 44. Rxe7
>Kxe7 45. Nd5+ Kxe6 46. Nxf4+ Ke5 47. Kxg3 Ke4 48. Ne2 Kd3
>49. Nc3 Kc2 50. Nxa4 b5 51. Nc3 Kxb2 52. Nxb5 Ka2 53. Nc3+
>Kxa3 54. Nd1 Ka2 55. Kf3 Kb1 56. Ke2 Kc2 57. g3 h5 58. h4
>Kc1 59. Nc3 Kc2 60. Na4 Kc1 61. Kd3 Kd1 62. Nb2+ Ke1
>63. Ke3 Kf1 64. Nd3 Kg2 65. Kf4 Kh2 66. Kf3 Kh3 67. Kf4 Kg2
>68. Kxf5 Kxg3 69. Kg5 Kf3 70. Kxh5 Ke3 71. Nb2 Kd4 72. Kg5
>Kc3 73. Nd1+ Kd2 74. Nb2 Kc3 1/2-1/2
>
>Position after move 57:
>
>[D]8/8/8/5p1p/8/1p4PP/2k1K3/3N4 w - -
>
>White to move, is win now with 58. h4!
>
>How many time need Your program
>to find h4?
>
>Here an analysis by Fritz 8:
>
>
>1.Se3+ Kc3 2.h4 Kd4 3.Sxf5+ Ke4 4.Sd6+ Kd5 5.Sb5 Kc4 6.Sa3+
>  +-  (1.56)   Tiefe: 21/42   00:04:05  72267kN, tb=92305
>1.h4!
>  +-  (1.59)   Tiefe: 21/42   00:04:21  76850kN, tb=102251
>
>Fritz 8 is slow, or?
>
>Eduard

modified Crafty in  ....
F8 was slow on my machine too ...
New game
8/8/8/5p1p/8/1p4PP/2k1K3/3N4 w - - 0 1

Analysis by Crafty 19.01 Petrosian (wb):

1.Ne3+ Kc1 2.Nc4 Kc2 3.Kf3 Kc3 4.Ne3 b2 5.Nd1+ Kc2 6.Nxb2 Kxb2
  ±  (0.82)   Depth: 9   00:00:00  142kN
1.h4 Kc1 2.Nc3 Kb2 3.Kd2 Ka3 4.Kc1 Kb4 5.Kb2
  ±  (1.14)   Depth: 9   00:00:00  9kN
1.h4 Kc1 2.Nc3 Kb2 3.Kd2 Ka3 4.Kc1 Kb4 5.Kb2
  ±  (1.14)   Depth: 9   00:00:00  180kN
1.h4 Kc1 2.Nc3 Kb2 3.Kd3 Ka3 4.Kd4 Kb4 5.Nd5+ Ka3 6.Ke5
  ±  (1.19)   Depth: 10   00:00:00  209kN
1.h4 Kc1 2.Nc3 Kb2 3.Kd3 Ka3 4.Kd4 Kb4 5.Nd5+ Ka3 6.Ke5
  ±  (1.19)   Depth: 10   00:00:00  416kN
1.h4 Kc1 2.Nf2 Kb2 3.Kd2 Ka1 4.Nd3 Ka2 5.Nc1+ Kb2 6.Nxb3 Kxb3
  +-  (1.53)   Depth: 11   00:00:00  524kN
1.h4 Kc1 2.Nf2 Kb2 3.Kd2 Ka1 4.Nd3 Ka2 5.Nc1+ Kb2 6.Nxb3 Kxb3
  +-  (1.53)   Depth: 11   00:00:00  763kN
1.h4 Kc1 2.Nf2 Kb2 3.Kd2 Ka1 4.Nd3 b2 5.Nxb2 Kxb2 6.Ke3 Kc2
  +-  (1.73)   Depth: 12   00:00:00  809kN
1.h4 Kc1 2.Nf2 Kb2 3.Kd2 Ka1 4.Nd3 b2 5.Nxb2 Kxb2 6.Ke3 Kc2
  +-  (1.73)   Depth: 12   00:00:01  1263kN
1.h4 Kc1 2.Nf2 Kb2 3.Kd2 Ka1 4.Nd1 b2 5.Nc3 b1Q 6.Nxb1 Kxb1 7.Ke3 Kc2
  +-  (1.73)   Depth: 13   00:00:01  1356kN
1.h4 Kc1 2.Nf2 Kb2 3.Kd2 Ka1 4.Nd1 b2 5.Nc3 b1Q 6.Nxb1 Kxb1 7.Ke3 Kc2
  +-  (1.73)   Depth: 13   00:00:01  2211kN
1.h4
  +-  (2.13)   Depth: 14   00:00:01  2236kN
1.h4 Kc1 2.Nc3 Kb2 3.Kd2 Ka3 4.Nd1 Kb4 5.Nb2 Kc5 6.Kc3 Kd5 7.Kxb3 Ke4
  +-  (2.39)   Depth: 14   00:00:04  5407kN
1.h4 Kc1 2.Nc3 Kb2 3.Kd2 Ka3 4.Nd1 Kb4 5.Nb2 Kc5 6.Kc3 Kd5 7.Kxb3 Ke4
  +-  (2.39)   Depth: 14   00:00:05  6768kN
1.h4
  +-  (2.79)   Depth: 15   00:00:05  6773kN
1.h4 Kc1 2.Nc3 Kb2 3.Kd2 Ka3 4.Nd1 Kb4 5.Ne3 b2 6.Kc2 Ka3 7.Nc4+ Kb4 8.Nxb2 Kc5
  +-  (3.19)   Depth: 15   00:00:09  11687kN
1.h4 Kc1 2.Nc3 Kb2 3.Kd2 Ka3 4.Nd1 Kb4 5.Ne3 b2 6.Kc2 Ka3 7.Nc4+ Kb4 8.Nxb2 Kc5
  +-  (3.19)   Depth: 15   00:00:10  13707kN
1.h4
  +-  (3.59)   Depth: 16   00:00:10  13824kN
1.h4 Kc1 2.Nf2 Kb2 3.Kd2 Ka3 4.Nd3 Ka4 5.Kc1 Kb5 6.Kb2 Kc4 7.Nf4 Kd4 8.Kxb3 Ke4
9.Nxh5
  +-  (4.37)   Depth: 16   00:00:11  14461kN
1.h4 Kc1 2.Nf2 Kb2 3.Kd2 Ka3 4.Nd3 Ka4 5.Kc1 Kb5 6.Kb2 Kc4 7.Nf4 Kd4 8.Kxb3 Ke4
9.Nxh5
  +-  (4.37)   Depth: 16   00:00:14  17651kN
1.h4 Kc1 2.Nc3 Kb2 3.Kd2 Ka3 4.Kc1 Kb4 5.Nd5+ Kc4 6.Nf6 Kc3 7.Nxh5 b2+ 8.Kb1 Kd4
9.Kxb2 Ke5 10.Nf4
  +-  (4.70)   Depth: 17   00:00:15  18952kN
1.h4 Kc1 2.Nc3 Kb2 3.Kd2 Ka3 4.Kc1 Kb4 5.Nd5+ Kc4 6.Nf6 Kc3 7.Nxh5 b2+ 8.Kb1 Kd4
9.Kxb2 Ke5 10.Nf4
  +-  (4.70)   Depth: 17   00:00:20  24783kN
1.h4 Kc1 2.Nf2 Kb2 3.Kd2 Ka3 4.Nd3 Ka4 5.Nc5+ Kb4 6.Nxb3 Kc4 7.Ke3 Kd5 8.Kf4 Kc4
9.Kxf5 Kd5 10.g4 hxg4 11.Kxg4
  +-  (4.92)   Depth: 18   00:00:23  26870kN
1.h4 Kc1 2.Nf2 Kb2 3.Kd2 Ka3 4.Nd3 Ka4 5.Nc5+ Kb4 6.Nxb3 Kc4 7.Ke3 Kd5 8.Kf4 Kc4
9.Kxf5 Kd5 10.g4 hxg4 11.Kxg4
  +-  (4.92)   Depth: 18   00:00:36  38212kN
1.h4 Kc1 2.Nf2 Kb2 3.Kd2 Ka3 4.Nd3 Ka4 5.Nc5+ Kb4 6.Nxb3 Kc4 7.Ke3 Kd5 8.Nc1 Ke5
9.Nd3+ Kd5 10.Nf4+ Kd6 11.Kd4 Ke7 12.Nxh5
  +-  (5.17)   Depth: 19   00:00:42  44137kN

(Byrne, Secane, PA USA 12.01.2003)



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