Author: bobby palacios
Date: 19:44:04 03/10/03
Go up one level in this thread
On March 10, 2003 at 22:31:33, Mike Byrne wrote:
>[Event "Rated game, 3m + 2s"]
>[Site "Engine Room"]
>[Date "2003.03.10"]
>[Round "?"]
>[White "Fritz 7"]
>[Black "Crafty 19.03 x"]
>[Result "0-1"]
>[ECO "B67"]
>[PlyCount "142"]
>
>1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8.
>O-O-O Bd7 9. f4 b5 10. Bxf6 gxf6 11. Kb1 Qb6 12. Nxc6 Bxc6 13. Qe1 Ra7 14. f5
>h5 15. fxe6 fxe6 16. Bd3 Rg7 17. Ne2 Be7 18. Rg1 Qe3 19. Qa5 O-O 20. Qxa6 Bxe4
>21. Bxe4 Qxe4 22. Nd4 e5 23. Ne6 {
>[d] 5rk1/4b1r1/Q2pNp2/1p2p2p/4q3/8/PPP3PP/1K1R2R1 b - - 0 23
>It's not possible for me to say that 23. ...Rxg2! is a winning move, but it is
>certainly the most interesting one that leads to winning chances for black. I
>believe most programs would play Ra8 . I believe it is the best move, but I'm
>not a strong enough player to say that with conviction. Initially after this
>move. Tiger 14 shows almost a +2 for white. By move 30, it is decidedly less
>certain of the position.
>}
>
>
>23. ...Rxg2 24. Rxg2+ Qxg2 25. Nxf8 Kxf8 26. Qc8+ Kf7
>27. h3 b4 28. Qf5 Qg6 29. Qf2 Qe4 30. Re1 Qg6 31. Rg1 Qe4 32. Qg3 Ke6 33. Re1
>Qd4 34. Qf3 h4 35. Rd1 Qc4 36. Qa8 Kd7 37. Qg2 f5 38. Qb7+ Ke6 39. Rg1 e4 40.
>Qa8 Qb5 41. Qg8+ Ke5 42. Qf7 Bf6 43. Re1 d5 44. Qc7+ Ke6 45. Qc8+ Qd7 46. Qg8+
>Ke5 47. Qb8+ Qd6 48. Qe8+ Be7 49. Rg1 Qd8 {
>[d] 3qQ3/4b3/8/3pkp2/1p2p2p/7P/PPP5/1K4R1 w - - 0 50
>
>Black's position is now one that many players would be comfortable with. No
>Shootem' out tactics -- just well evaluated positional type moves that have
>turned the tide. All this in game 3" 2' (ugh!)
>}
>50. Qh5 Qf8 51. Qe2 Qe8 52. Rg7 f4
>53. Rg4 f3 {
>[d] 4q3/4b3/8/3pk3/1p2p1Rp/5p1P/PPP1Q3/1K6 w - - 0 54
>
>It's over. black should now win.
>}
>54. Qe3 Qf7 55. Qf2 Qf6 56. Qh2+ Ke6 57. Qf2 Kf5 58. Qg1 Qe6 59. Qe3
>Qd6 60. Qa7 Qc5 61. Qd7+ Ke5 62. Qe8 Kd4 63. Rg1 Ke3 64. Qg6 Kd2 65. Rh1 Qxc2+
>66. Ka1 e3 67. Qg7 Qe4 68. Qg1 e2 69. Qe1+ Kd3 70. Rg1 Qe3 71. Qb1+ Kd4 0-1
23..Rxg2 maybe the best practical chance but 25.Nxf8, according to Crafty 19.03
was not white's best move, and in fact gives white a nice advantage after
25.Qa7, threatening Qxe7 or Rg1.
p4 2.47ghz, 128mb hash
Analysis by Crafty 19.03:
3.Nxf8 Kxf8
± (1.02) Depth: 1/8 00:00:00
3.Nxf8 Kxf8
± (1.02) Depth: 2/8 00:00:00
3.Nxf8 Kxf8 4.h4
± (1.08) Depth: 3/8 00:00:00
3.Nxf8 Bxf8 4.Kc1 Bh6+ 5.Kb1 Qxh2 6.Qxd6
± (0.94) Depth: 4/8 00:00:00
3.Nxf8 Kxf8 4.Qxb5 Qxh2 5.a4
± (1.07) Depth: 5/10 00:00:00
3.Nxf8 Kxf8 4.Qc8+ Kf7 5.Qd7 b4 6.h4
± (0.88) Depth: 6/11 00:00:00 27kN
3.Nxf8 Kxf8 4.Qxb5 Qxh2 5.a4 f5 6.a5
± (0.93) Depth: 7/14 00:00:00 91kN
3.Nxf8 Kxf8 4.Qxb5 Qxh2 5.a4 f5 6.Qb8+ Kf7 7.b4
± (0.82) Depth: 8/16 00:00:00 269kN
3.Qa7 Rc8 4.Rg1 Qxg1+ 5.Qxg1+ Kf7 6.Nd4 exd4 7.Qxd4 f5
± (1.21) Depth: 8/16 00:00:00 453kN
3.Qa7 Rc8 4.Rg1 Qxg1+ 5.Qxg1+ Kf7 6.Nd4 exd4 7.Qxd4 Ke6 8.Kc1
+- (1.57) Depth: 9/18 00:00:01 693kN
3.Qa7 Rc8 4.Rg1 Qxg1+ 5.Qxg1+ Kf7 6.Nd4 exd4 7.Qxd4 Rc5 8.Kc1 f5
± (1.40) Depth: 10/22 00:00:01 1234kN
3.Qa7 Rc8 4.Rg1 Qxg1+ 5.Qxg1+ Kf7 6.Nd4 exd4 7.Qxd4 Rc5 8.Kc1 f5 9.Kd2
+- (1.73) Depth: 11/24 00:00:03 2502kN
3.Qa7 Rc8 4.Rg1 Qxg1+ 5.Qxg1+ Kf7 6.Nd4 exd4 7.Qxd4 Rc5 8.Kc1 f5 9.Kd2 Re5
+- (1.52) Depth: 12/30 00:00:05 4617kN
3.Qa7 Rc8 4.Rg1 Qxg1+ 5.Qxg1+ Kf7 6.Nd4 exd4 7.Qxd4 Rc5 8.Kc1 Ke6 9.Qf4 Rc4
10.Qe3+ Kd7
+- (1.65) Depth: 13/33 00:00:11 10199kN
3.Qa7 Rc8 4.Rg1 Qxg1+ 5.Qxg1+ Kf7 6.Nd4 exd4 7.Qxd4 Rc5 8.Kc1 f5 9.Qf4 Re5
10.Kd2 Ke6
+- (1.54) Depth: 14/34 00:00:25 23846kN
3.Qa7 Rc8 4.Rg1 Qxg1+ 5.Qxg1+ Kf7 6.Nd4 exd4 7.Qxd4 Rc5 8.Kc1 Ke6 9.Qf4 Re5
10.Kd2 Kd5 11.Kd3
+- (1.49) Depth: 15/35 00:01:48 101347kN
By the way, Fritz 8 would have also played Qa7. And it seems only Fritz 7 likes
Nxf8.
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