Author: Mike Byrne
Date: 18:50:23 08/05/02
All those who requested the previous versions will be emailed a current 17.16
executable. Since each version is better than the previous, I'm not in the
habit of releasing older modified crafty's. To request a free copy of 17.16 SE,
please email me at mfbyrne_pa@msn.com.
All my modified Crafty's are based on Dr. Robert Hyatt's Crafty original Crafty
source - and these modified Crafty's would not exist except for him.
I always send my modified source to Bob and he is naturally free to implement if
he choses - but I am sure he would be the first to say I'm not a programmer and
my programming is sometimes "not good".
Changes:
It is more aggressive with its pawns - sometimes perhaps too aggressive. In
this case, I increased the piece square values for advanced pawns by a little
bit. It is out playing my previous versions by about 2:1 margin in wins.
(Note - a 2:1 margin against avery similiar program is not as much as
improvement as 2:1 margin against a dissimiliar program - but it's enough to
warrant a release - I think).
There are some other minor chanegs as well - but the big change is with the
piece square value for pawns.
Here's a position form ana actual game - this game was very interesting as the
newer version got caught in a bad trade and both sides were agreeing that 17.15
SE was up by about two pawns. This one move changed the game.
[D] 1k2b3/2q2p2/Q6p/p4Pb1/1p1R3p/1P6/2P3PP/1K6 w - - 32
f6! forces the exchange of the queens and the pawn queens winning the bishop in
another 9 moves. My older version would take a long time to find f6 - how long
I am not sure.
Complete Game:
==========================
[Event "Arena tournament"]
[Site "Secane, PA"]
[Date "2001.08.05"]
[Round "27"]
[White "Crafty 17.16"]
[Black "Crafty_17_15_Ext_75"]
[Result "1-0"]
[ECO "B99"]
[Opening "Sicilian"]
[Time "12:31:18"]
[Variation "Najdorf (7...Be7) main line"]
[TimeControl "300+3"]
1.e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nbd7 8.
Qf3 Qc7 9. O-O-O Be7 10. Bd3 h6 11. Bh4 g5 12. e5 gxh4 13. exf6 Nxf6 14. f5 e5
15. Nde2 Bd7 16. Ne4 d5 17. Nxf6+ {-0.26/11 19} Bxf6 18. Qxd5 {-0.26/11 19}
Bc6 19. Qc4 {-0.88/11 32} b5 20. Qc3 {-0.99/10 13} O-O-O 21. a4 {-1.92/9 7}
Bg5+ {-1.44/10 17} 22. Kb1 {-1.81/11 14} e4 {-1.70/11 2} 23. Nd4 {-1.90/11 14}
Rxd4 24. Qxd4 {-1.76/11 10} Rd8 25. Qc3 {-1.87/11 6} exd3 {-2.06/11 9} 26.
Rxd3 {-2.11/11 2} b4 {-1.96/11 14} 27. Rxd8+ {-1.94/10 13} Bxd8 28. Qd3
{-1.94/10 9} a5 29. Rd1 {-1.77/11 4} Bg5 {-1.82/10 11} 30. Qa6+ Kb8
{-1.67/11 14} 31. Rd4 Bxa4 {-0.40/10 15} 32. b3 {-1.22/10 12} Be8 {-1.29/10 3}
33. f6 {-0.93/10 7} h3 {-0.37/11 14} 34. gxh3 Bc6 {0.51/11 27} 35. Rc4 Bb7
{2.56/13 14} 36. Rxc7 Bxa6 37. Rxf7 {2.82/13 7} Bc8 {2.89/11 8} 38. Rf8
{3.11/14 12} Kc7 {3.22/14 1} 39. f7 {3.28/13 11} Be7 40. Re8 Bc5 41. f8=Q
{4.20/14 7} Bxf8 {4.45/15 17} 42. Rxf8 Bxh3 43. Rh8 Bf5 {5.01/13 28} 44. Rxh6
{5.16/12 13} a4 {5.66/13 19} 45. Kb2 {5.31/12 10} axb3 46. Kxb3 {5.92/12 1}
Be4 {5.85/11 7} 47. Kxb4 {6.27/12 11} Kd7 {6.19/11 12} 48. c4 {6.46/12 9} Ke7
{6.62/11 1} 49. c5 {7.47/11 10} Kd7 {8.08/12 3} 50. c6+ {7.98/12 11} Kc7
{12.25/13 8} 51. Rf6 Bd5 {M21/13 44} 52. h4 Bg2 {M18/12 7} 53. h5 {M13/12 10}
Be4 {M9/12 1} 54. Kc5 {M9/12 8} Bc2 55. h6 {M8/11 7} Kc8 56. h7 {M7/11 14}
Bxh7 57. Rf8+ Kc7 58. Rf7+ Kc8 {M4/4} 59. Rxh7 {M4/4} Kd8 {M3/4} 60. Kb6 Ke8
{Black resigns} 1-0
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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