Author: John Merlino
Date: 18:02:37 12/15/02
Go up one level in this thread
On December 15, 2002 at 20:39:46, Peter Skinner wrote:
>In the game below, I observed some impressive tactics from Chess Tiger 15.0 Can
>your engine find the rook sac? 33... Rxe5 and went on to easily win!
>
>I thought it was very impressive.
>
>[D]3rr3/1pp2ppk/1n5p/p3PP2/PbPP3R/1B3K1P/1B6/6R1 w
>
>[Event "ICC 5 3"]
>[Site "Internet Chess Club"]
>[Date "2002.12.15"]
>[Round "-"]
>[White "levli"]
>[Black "wackyraces"]
>[Result "0-1"]
>[ICCResult "White resigns"]
>[WhiteElo "2986"]
>[BlackElo "3463"]
>[Opening "QGA, Janowsky-Larsen variation"]
>[ECO "D25"]
>[NIC "QG.06"]
>[Time "20:16:09"]
>[TimeControl "300+3"]
>
>1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. O-O a6 7. Nc3 Nbd7 8.
>h3 Bf5 9. Qe2 Nb6 10. Bb3 Nbd5 11. Nh4 Nxc3 12. bxc3 Be4 13. Nf3 h6 14. Nd2
>Bg6 15. e4 Be7 16. f4 Qd7 17. Bb2 O-O 18. g4 Rfe8 19. f5 exf5 20. gxf5 Bh5
>21. Qg2 Qc6 22. Rae1 a5 23. e5 Qxg2+ 24. Kxg2 Nd7 25. a4 Bh4 26. Re4 Bg5 27.
>Nf3 Be7 28. Kf2 Nb6 29. Rg1 Rad8 30. c4 Kh7 31. Rf4 Bb4 32. Rh4 Bxf3 33.
>Kxf3 Rxe5 34. dxe5 Rd3+ 35. Ke2 Rd2+ 36. Ke3 Rxb2 37. Bd1 Bc5+ 38. Rd4 Rb4
>39. Kd3 Bxd4 40. Kxd4 Rxc4+ 41. Kd3 Rh4 42. Bg4 Kg8 43. e6 Kf8 44. Rc1 c6
>45. Rb1 Nxa4 46. Kd2 Nc5 {White resigns} 0-1
CM9000, on a P3-733, finds it in two seconds, but it gets less happy with it as
it searches deeper:
Time Depth Score Positions Moves
0:00 1/5 0.94 24858 1...Bf8 2.Rhg4 Kg8 3.Bc3 h5
0:00 1/5 0.87 38876 1...Rg8 2.Bc1 Bc3 3.f6 Bxd4 4.Bc2+
Kh8 5.fxg7+ Rxg7 6.Rxh6+ Kg8
0:01 1/5 0.86 49949 1...Nd7 2.Bc2 Nb6 3.Rhg4 Nxc4 4.Rxg7+
Kh8
0:01 1/6 0.90 74314 1...Nd7 2.Bc2 Nb6 3.Rhg4 Nxc4 4.Rxg7+
Kh8 5.f6
0:01 1/6 0.87 81535 1...Rg8 2.Bc1 Bc3 3.f6 Bxd4 4.Bc2+
Kh8 5.fxg7+ Rxg7 6.Rxh6+ Kg8
0:02 1/6 0.20 123423 1...Rxe5 2.dxe5 Rd3+ 3.Ke4 Rxb3
4.Rhg4 Bf8 5.Bd4 Nxc4 6.R4g3
0:03 1/7 0.35 195026 1...Rxe5 2.dxe5 Rd3+ 3.Ke2 Rxb3
4.Bd4 Nxc4 5.e6 g6 6.exf7
0:06 1/8 0.25 446052 1...Rxe5 2.dxe5 Rd3+ 3.Ke4 Rxb3
4.Rhg4 Bf8 5.Bd4 Nxc4 6.R4g3 Ra3
0:12 1/9 0.35 1008990 1...Rxe5 2.dxe5 Rd3+ 3.Ke2 Rd2+
4.Kf1 Rxb2 5.Rhg4 Bf8 6.Bd1 Nd7
7.e6 Rd2 8.Bf3
0:29 2/10 0.21 2533604 1...Rxe5 2.dxe5 Rd3+ 3.Ke2 Rd2+
4.Kf1 Rxb2 5.Rhg4 Bf8 6.Bd1 Rb4
7.e6 Nxc4 8.e7 Ne3+ 9.Ke2
1:17 3/11 0.61 7106961 1...Rxe5 2.dxe5 Rd3+ 3.Ke2 Rd2+
4.Kf1 Rxb2 5.Rhg4 Bf8 6.R4g3 Rb1+
7.Kg2 Rb2+ 8.Kh1 Rf2 9.c5 Nd7
3:51 4/12 0.78 21860593 1...Rxe5 2.dxe5 Rd3+ 3.Ke2 Rd2+
4.Kf1 Rxb2 5.Rhg4 Bf8 6.e6 fxe6
7.fxe6 g6 8.R1g3 Rb1+ 9.Ke2 Rb2+
10.Kd1 Bd6 11.Re3
The game was lost because of 36.Ke3, to which CM gives a -2.9 score, as compared
with 36.Kf1, which is +0.8....
jm
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