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Subject: Test Position : Chezzz - Hossa

Author: David Rasmussen

Date: 03:11:32 01/19/03


[D]3b4/8/3k4/p2Pp1p1/2P5/pKP1B1P1/Nn6/8 w - - 0 54

In this position Chezzz moved Bg1, which may be an error. I can't reproduce it
now, though:

00:00:00.00    8n  01/00/02 +0.810 54. g4 (8)
00:00:00.01   23n  01/01/03 ---------------------------------------------------
00:00:00.01   61n  02/02/06 +0.740 54. g4 Bf6 (61)
00:00:00.03  185n  02/03/07 ---------------------------------------------------
00:00:00.03  279n  03/04/05 +0.700 54. g4 Bf6 55. Bb6 (279)
00:00:00.03  601n  03/05/07 +0.810 54. Bc1 Kc5 55. Be3+ Kd6 (601)
00:00:00.04  853n  03/05/07 ---------------------------------------------------
00:00:00.04 1294n  04/06/10 +0.810 54. Bc1 Kc5 55. Be3+ Kd6
                                   56. g4 (1294)
00:00:00.04 1702n  04/07/10 ---------------------------------------------------
00:00:00.06 2798n  05/08/11 +0.700 54. Bc1 Kc5 55. Be3+ Kd6
                                   56. g4 (2798)
00:00:00.06 5207n  05/09/11 +0.885 54. g4 Bf6 55. Bb6 e4
                                   56. Bxa5 (5207)
00:00:00.08 5693n  05/09/12 ---------------------------------------------------
00:00:00.08 9991n  06/09/13 +0.745 54. g4 e4 55. Bc1 a4+
                                   56. Kb4 Nd3+ 57. Kxa3 Nc5 (9991)
00:00:00.12   26kn 06/10/14 ---------------------------------------------------
00:00:00.14   34kn 07/10/13 +0.795 54. g4 e4 55. Bc1 Bf6
                                   56. Bxb2 axb2 57. Kxb2 (34163)
00:00:00.15   43kn 07/12/14 ---------------------------------------------------
00:00:00.20   67kn 08/12/16 +0.720 54. g4 e4 55. Bc1 Be7
                                   56. Bxb2 axb2 57. Kxb2 a4 (67038)
00:00:00.31  132kn 08/14/16 ---------------------------------------------------
00:00:00.45  208kn 09/14/17 +0.950 54. g4 e4 55. Bg1 Nd1
                                   56. Kxa3 e3 57. Ka4 Kc5
                                   58. Kb3 (208696)
00:00:00.47  217kn 09/14/17 ---------------------------------------------------
00:00:00.65  329kn 10/17/20 +0.775 54. g4 Nd1 55. Bc1 Nb2
                                   56. Bxb2 axb2 57. Kxb2 Bb6
                                   58. Ka3 e4 (329575)
00:00:00.76  395kn 10/17/21 ---------------------------------------------------
00:00:01.29  739kn 11/18/22 +0.945 54. g4 e4 55. Ba7 Bc7
                                   56. Be3 Bd8 (739258)
00:00:01.36  769kn 11/18/22 ---------------------------------------------------
00:00:01.65  969kn 12/19/22 +0.750 54. g4 e4 55. Ba7 Bc7
                                   56. Be3 Bd8 57. Bg1 (969498)
00:00:03.42 2068kn 12/21/22 ---------------------------------------------------
00:00:04.42 2697kn 13/21/23 +0.720 54. g4 e4 55. Bg1 Be7
                                   56. Be3 Nd1 57. Ba7 e3
                                   58. Nc1 Nf2 59. Bxe3 Nxg4
                                   60. Bd4 (2697812)
00:00:07.29 4477kn 13/21/23 ---------------------------------------------------
00:00:09.79 6046kn 14/24/27 +0.545 54. g4 Nd1 55. Ba7 Nb2
                                   56. Bg1 Bc7 57. Be3 Bd8
                                   58. Ba7 Bc7 59. Bg1 Bd8
                                   60. Bf2 e4 (6046756)
00:00:15.20 9529kn 14/25/27 +0.790 54. Ba7 e4 55. Be3 g4
                                   56. Ba7 Bc7 57. Bd4 Kd7
                                   58. c5 Bxg3 59. Kxa3 Nd3
                                   60. Ka4 Bc7 (9529562)
00:00:15.83 9849kn 14/25/27 ---------------------------------------------------
00:00:21.68   13Mn 15/24/27 +0.660 54. Ba7 e4 55. g4 Be7
                                   56. Be3 Bd8 (13501043)
00:00:25.90   15Mn 15/26/27 ---------------------------------------------------
00:00:33.40   20Mn 16/31/32 +0.660 54. Ba7 e4 55. g4 Be7
                                   56. Be3 Bd8 (20488875)
00:00:36.22   21Mn 16/31/32 ---------------------------------------------------
00:01:17.67   46Mn 17/29/32 +0.660 54. Ba7 e4 55. g4 Be7
                                   56. Be3 Bd8 (46836757)
00:01:23.50   49Mn 17/29/32 ---------------------------------------------------
force:34.95  204Mn 18/27/28   1/16 54. Ba7


        Time used: 00:06:36.92
        nps: 517090     nodes: 205248775        Q-nodes: 14622775 (7%)
        move order: 93%
        hash probes: 62836481   hash hits: 18278902 (29%)       hash usage: 99%
        pawn hash probes: 101133126     pawn hash hits: 100905891 (99%)
        EGTB probes: 30492

I like g4 because it restrains black's bishop and fixates the g5 pawn so it can
be attacked by white's bishop. I don't know what the point of Ba7 is. And I
can't even produce Bg1. But:

What does your engine think in this position, and what does it think in the
position after Bg1:

[D]3b4/8/3k4/p2Pp1p1/2P5/pKP3P1/Nn6/6B1 b - - 0 54

Chezzz likes 54... e4 with a negative but climbing score:

00:01:11.30   40Mn 18/30/32 -0.265 54... e4 55. g4 Be7 56. Bb6 e3
                                   57. Bxe3 Ke5 58. Bd4+ Ke4
                                   59. d6 Bxd6 60. c5 Bc7
                                   61. Kxa3 Nd3 62. Ka4 Kf3
                                   63. Kb5 Kxg4 (40913926)

And last: What is your engines static eval in the first position where it's
white's turn. Chezzzz: +0.810

Entire game:

[Event "ICS unrated standard match"]
[Site "chessclub.com"]
[Date "2003.01.19"]
[Round "-"]
[White "Chezzz"]
[Black "Hossa"]
[Result "0-1"]
[WhiteElo "2313"]
[BlackElo "2338"]
[TimeControl "2700+10"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 Be7 5. d3 Nf6 6. Nd2 d6 7. Nf1 Bg4 8.
f3 Be6 9. Ne3 Bxc4 10. dxc4 Nd4 11. Qd3 O-O 12. O-O Qd7 13. Ncd5 Nxd5 14.
Nxd5 f5 15. Be3 fxe4 16. fxe4 Bh4 17. c3 Ne6 18. Rad1 Rxf1+ 19. Rxf1 Rf8
20. Rxf8+ Kxf8 21. Qe2 Qf7 22. Qg4 Bd8 23. Bd2 h5 24. Qh3 Ke8 25. b4 b6 26.
a3 Kd7 27. Qg3 Be7 28. a4 Bd8 29. Be3 Qe8 30. a5 bxa5 31. bxc5 Qf7 32. cxd6
Kxd6 33. Qe1 Kc6 34. Qb1 Qb7 35. Qd1 h4 36. Bf2 a6 37. Ne3 Kc7 38. Qd5 Qxd5
39. exd5 Nf4 40. Kf1 a4 41. Nc2 Kd6 42. Ba7 g5 43. g3 hxg3 44. hxg3 Nh5 45.
Kf2 Nf6 46. Ke2 Ne4 47. Ke3 Nf6 48. Nb4 a3 49. Kd3 Nd7 50. Be3 a5 51. Na2
Nc5+ 52. Kc2 Na4 53. Kb3 Nb2 54. Bg1 g4 55. Be3 Bc7 56. Bg5 e4 57. Bf4+ Kd7
58. Bxc7 Kxc7 59. c5 Nd3 60. Kc4 Nxc5 61. Kd4 Kb6 62. Ke3 Nb7 63. Kd4 e3
64. Kxe3 Kc5 65. Kd3 Kxd5 66. c4+ Kc5 67. Nc1 Kb4 68. Kc2 Nc5 69. Kb1 Kxc4
70. Ne2 Ne4 71. Kc2 a4 72. Kc1 Nc3 73. Nf4 Kb3 74. Ne6 a2 75. Nd4+ Kc4 76.
Nc2 a3 77. Na1 Ne2+ 78. Kd2 Nxg3 79. Ke1 Kc3 80. Kd1 Kb2 81. Nc2 a1=Q+ 82.
Nxa1 Kxa1 83. Kc2 Nf5 84. Kc1 g3 85. Kd2 g2 86. Kd3 g1=Q 87. Ke4 Qd4+ 88.
Kxf5 Kb1 89. Ke6 a2 90. Kf5 a1=Q 91. Ke6 Qaa7 92. Kf5 Qag7 93. Ke6 Qgd7#
{Chezzz checkmated} 0-1

/David



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