Author: Mike Byrne
Date: 10:47:52 05/27/02
7Th Game Ends in a Draw!
Tiger is leading the match 3-2.
The seventh game of the Frank J. Byrne Memorial Computer Chess Challenge pitting
the world's best freely available commercial computer chess program – Chess
Tiger v14 by Christophe Theron against the world's best freely available
non-commercial computer chess program - Crafty v18.15 by Robert Hyatt, ended in
a draw today. It is the second draw of the match.. The third game also ended
in a draw.
Summary:
Tiger v14.0 CP 0 0 .5 1 1 1 .5 =4
Crafty 18.15 1 1 .5 0 0 0 .5 =3
For the first time , a Sicilian defence was played. The Pelikan (aka
Chelyabinsk) variation has a devoted following among chess players. Tiger was
able to finally win a pawn on 42. Nxe5, but Crafty played a tenacious defense
throughout the game and preserved the draw. Early on Crafty had an potentially
powerful outside pawn passer but was never able to capitalize on it. Equality
was achieved by Crafty with a series of moves commencing with 51. Rxa3, which
eliminated Tiger’s last remaining pawn passer at c4.
Crafty stunned Tiger by winning the first two games of the match. Since then,
Tiger has roared back by winning game 4, 5, and 6 to take the lead 3-2.
Like the days of yore, it is the first program to win 10 games and the program
must have a margin of victory of 2 games. A winning score could be 10-8 or
21-19 it all depends on how the games go. Draws do not count - it just wins
that count.
The match is being held just outside of Philadelphia. Game 8 is underway.
For further background information on this match, please see this link.
http://www.talkchess.com/forums/1/message.html?231517
The moves for game 7:
[Event "Frank J. Byrne Memorial Computer Chess Challenge"]
[Site "Philadelphia, PA"]
[Date "2002.05.27"]
[Round "7"]
[White "Chess Tiger v14.0"]
[Black "Crafty v18.15"]
[Result "1/2-1/2"]
1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8.
Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 O-O 12. Nc2 Rb8 13. Be2 a5 14. O-O Bg5
15. Qd3 Be6 16. Nce3 g6 17. Rad1 b4 18. Nc4 bxc3 19. bxc3 Ne7 20. Nde3 Nc8 21.
Bg4 Bxe3 22. Nxe3 Bxa2 23. Ra1 Bb3 24. Rfb1 Ne7 25. Bd1 Bxd1 26. Rxd1 Ra8 27.
Qxd6 Qxd6 28. Rxd6 Rfb8 29. Nc4 Rb5 30. Rd7 Kf8 31. Kf1 a4 32. Ke2 f5 33. f3 Ra6
34. Rc7 Rb8 35. exf5 gxf5 36. Rc5 Ng6 37. g3 Kg7 38. Rc7+ Kg8 39. Kd3 Rd8+ 40.
Ke3 h5 41. Rc5 Kg7 42. Nxe5 Re8 43. f4 a3 44. Kd3 Nxe5+ 45. Rxe5 Rb8 46. Ra2 Kf6
47. Re1 Rd8+ 48. Kc2 Rd7 49. c4 Rc7 50. Kb3 h4
{
[D] 8/2r5/r4k2/5p2/2P2P1p/RK4P1/7P/4R3 b - - 0 1
Crafty achieves drawn endgame with 51…. Rxa3! , eliminating the last remaining
threat two moves later with 53. Rxc4.
}
51. Rxa3 Rxa3+ 52. Kxa3 hxg3 53. hxg3 Rxc4 54. Kb3 Rc8 55. Ra1 Rg8 56. Rg1 Rc8
57. Re1 Rg8 58. Re3 Kg6 59. Kc4 Kh5 60. Kd5 Rd8+ 61. Ke5 Re8+ 62. Kd4 Rd8+ 63.
Ke5 Re8+ 64. Kd4 Rd8+ 65. Ke5
{
Draw by 3 times repetition.
}
1/2-1/2
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