Author: Will Singleton
Date: 00:17:50 05/31/99
Go up one level in this thread
On May 24, 1999 at 22:44:25, Jon Dart wrote:
>Arasan is on a K6/400 now. Here is an interesting game against
>"beadle" (lambChop 7.7 on a fast machine, faster than handle
>"lambchop"):
>
>[Event "?"]
>[Site "?"]
>[Date "1999.05.23"]
>[Round "?"]
>[White "Arasan 5.1"]
>[Black "Beadle"]
>[Result "0-1"]
>[ECO "D37"]
>[TimeControl "300+3"]
>
>1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nc6 7. h3
>dxc4 8. Bxc4 Nd5 9. Nxd5 exd5 10. Bb5 Bb4+ 11. Nd2 g5 12. Bg3 Bf5
>13. Rc1 Bd7 14. a3 Bxd2+ 15. Qxd2 a6 16. Bd3 Kh8 17. Qd1 f5 18. Qh5
>Qe7 19. O-O f4 20. exf4 gxf4 21. Bh2 Qf7 22. Qg5 Be6 23. Rfe1 Qf6
>24. Qxf6+ Rxf6 25. Rc5 Bf5 26. Bf1 Be4 27. f3 Bxf3 28. gxf3 Nxd4
>29. Kf2 c6 30. Re7 b6 31. Rc1 Raf8 32. Bxa6 b5 33. Rg1 h6 34. Rgg7
>Re8 35. Rh7+ Kg8 36. Reg7+ Kf8 37. Rb7 Kg8 38. Rhg7+ Kf8 39. Rh7 Kg8
>40. Rbg7+ Kf8 41. Rd7 Kg8 42. Rhg7+ Kf8 43. Rh7 Kg8 44. Rhg7+ Kf8
>45. Bg1 Nf5 46. Rg4 Ne3 47. Rgg7 Nf5 48. Rh7 Kg8 49. Bxb5 cxb5
>50. Rb7 Rfe6 51. Kg2 Re1 52. Bf2 R8e2 53. Rhg7+ 0-1 {ArasanX resigns}
>
>Arasan would not play 27 .. Bxf3 (Crafty doesn't like it either),
>but the sacrifice was effective in this game.
>
Hiarcs also didn't play it. But Amateur played 27...Bxf3, needing 10 ply,
probably too much for a blitz game. The eval is about the same for Bg6, though.
However, the position is still losing for Black, imo. Once you get your rooks
on the seventh, it appears the best course of action is to exchange rooks,
leaving Black in a losing position. For example, 35. Rxe8 seems to win. Maybe
you give an excess value for rooks on the 7th? Amateur would take the rook on
either move 35 or 36.
>Another interesting position is at move 49, where Bxb5 is a mistake.
>(FEN: 4r1k1/3R3R/B1p2r1p/1p1p1n2/5p2/P4P1P/1P3K2/6B1 w - -).
>Crafty seems to think h4 is the best chance for White here, although
>White clearly isn't comfortable by this time.
>
This is a tough position. LambChop appears adept at creating these types of
advantageous situations for itself (see current u2600 position). Hiarcs 6
thinks that most moves lead to about -1 for White (thru 10 ply, 4 min 20 sec on
a g3/300). But if I play Bxb5, then it gives a huge advantage for black very
quickly. Amateur, fwiw, likes a4 in this position, which is no good either.
>
>Beadle's bishop sack reminds me of another game a week or so ago. I
>nearly fell off my chair when White played 29. Rxg7+, although it
>doesn't seem to lead to much more than an even position, and Arasan
>would up winning. Arasan would play this sac: it is not very hard for
>a computer to see.
>
Nice position. (r2r2k1/6pp/p2P1p2/1p6/5p2/8/qP2QP1P/3R2RK w - -)
29. Rxg7+ is correct, of course, but it isn't a sac, since the move is seen to
lead to a likely draw by rep. Hiarcs 6 on a g3/300 needs 17 sec to fail high.
MacChess 4, interestingly, needs only 6 seconds to choose the right move.
Amateur needs forever, eventually switching on the 10th ply. I have some
problem with checks exploding the tree. This is a good debugging position, I
think!
>[Event "?"]
>[Site "?"]
>[Date "1999.05.15"]
>[Round "?"]
>[White "master-tal"]
>[Black "Arasan 5.1"]
>[Result "0-1"]
>[ECO "C88"]
>[WhiteElo "2616"]
>[BlackElo "2482"]
>[TimeControl "300+8"]
>
>1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3
>d6 8. c3 Na5 9. Bc2 c5 10. d4 Qc7 11. Nbd2 O-O 12. Nf1 cxd4 13. cxd4
>Bg4 14. Ne3 Bxf3 15. gxf3 Nc6 16. dxe5 dxe5 17. Bd2 Rfd8 18. Bb3 Bb4
>19. Nd5 Nxd5 20. Bxd5 Bxd2 21. Qxd2 Ne7 22. Rad1 Nxd5 23. exd5 Qd6
>24. Qe2 Qg6+ 25. Kh1 f6 26. Rg1 Qf7 27. d6 Qxa2 28. f4 exf4 29. Rxg7+
>Kxg7 30. Qe7+ Kg6 31. Rg1+ Kf5 32. Qxh7+ Ke5 33. Re1+ Kxd6 34. Qe7+
>Kc6 35. Rc1+ Qc4 36. Rxc4+ bxc4 37. Qxf6+ Kb5 38. Qe5+ Ka4 39. Kg2
>Rf8 40. Qd6 f3+ 41. Kg3 a5 42. h4 Rab8 43. Qd4 Kb4 44. h5 Kb3
>45. Qc3+ Ka2 46. Qxc4+ Kxb2 47. Qd4+ Kb3 48. Qd1+ Kb4 49. Qd2+ Ka4
>50. Qd7+ Ka3 51. Qd6+ Kb3 52. Qd3+ Ka4 53. Qc2+ Kb4 54. Qb2+ Kc4
>55. Qc1+ Kb5 56. Kg4 a4 57. Qb2+ Kc4 58. Qc2+ Kb5 59. Qd3+ Ka5
>60. Qc3+ Rb4+ 61. Kg5 Kb5 62. Qe5+ Kc4 63. Qe6+ Kc3 64. Qe3+ Kb2
>65. Qd2+ Kb3 66. Qd5+ Rc4 67. Qd3+ Kb4 68. Qd6+ Rc5+ 69. Kg6 Rg8+
>70. Kh7 Rgg5 71. Qf4+ Ka5 72. Qd2+ Kb5 73. Qd7+ Kb6 74. Qe6+ Kb5
>75. Qe8+ Kb4 76. Qe4+ Ka5 77. Qa8+ Kb6 78. h6 Rc7+ 79. Kh8 Rh5
>80. Qb8+ Rb7 81. Qd6+ Ka5 82. Qd2+ Ka6 83. Qd3+ Rhb5 84. h7 Ka5
>85. Qd8+ R5b6 86. Qa8+ Kb5 87. Qe8+ Kb4 88. Qf8+ Kb5 89. Qxf3 Rb8+
>90. Kg7 R8b7+ 91. Kg8 Rb8+ 92. Kf7 R8b7+ 93. Kf8 Rb8+ 94. Ke7 R6b7+
>95. Kd6 Rd8+ 96. Ke5 Rxh7 97. Qe2+ Kb6 98. Qe3+ Kb5 99. Qe2+ Kb6
>100. Qc4 Rh5+ 101. Ke6 Ra8 102. Qb4+ Rb5 103. Qd6+ Ka5 104. Qc7+ Rb6+
>105. Ke7 Raa6 106. Qc5+ Rb5 107. Qc3+ Kb6 108. Qd4+ Kb7 109. Qe4+ Ka7
>110. Qe3+ Ka8 111. Qa3 Rb7+ 112. Kd8 Raa7 113. Qf3 a3 114. Qd5 a2
>115. Qxa2 Rb8# 0-1 {master-tal checkmated}
>
>
>--Jon
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