Author: Will Singleton
Date: 21:39:31 11/04/02
White to play, bm is d7. How long until your engine shows a positive score?
(amd 1.6ghz).
Amateur ply 15 score 33 secs 212
Yace ply 15 score 9 secs 103
Crafty ply 16 score 40 secs 69
Ruffian ply 12 score 51 secs 5 (just amazing)
[D]5kb1/6pp/p2P1p2/1p6/2r5/P1r2N1P/6P1/2R2RK1 w - - 0 36
(remember, d7 must show a positive score)
--------------------
(following is background info)
The above position came from a recent Lyapko League E game, Ldb_20c v
Amateur_2.4. Amateur was cruising along nicely, until 35....Rec4. Just one of
those positions that's a bit too deep, considering the machine (k6-450) and the
time control. The best move is either 35...Rd3 or 35...Rxc1. I don't feel too
bad about it, because even Yace would have played the same move, given the 4x
speed diff:
[D]5kb1/6pp/p2P1p2/1p6/4r3/P1r2N1P/6P1/2R2RK1 b - - 0 35
yace (amd 1.6ghz):
17865 <first : 10 107 906 7125647 t+ 1...Rec4 2.d7 Ke7 3.Rcd1 Kd8 4.Rfe1 Bf7
5.Kf2 Rxa3 6.Kg3 {170}
18326 <first : 10 108 952 7482553 t 1...Rec4 2.d7 Ke7 3.Rcd1 Kd8 4.Rfe1H Bf7H
5.Re7H Rc1H 6.Ree1H R1c2H {90}
19738 <first : 10 108 1093 8518595 . 1...Rec4 2.d7 Ke7 3.Rcd1 Kd8 4.Rfe1 Bf7
5.Re7 Rc1 6.Ree1 R1c2 {90}
22672 <first : 11 93 1386 10873676 t 1...Rec4 2.d7 Ke7 3.Rcd1 Kd8 4.Rfe1 Bf7
5.Re7 Rc1 6.Ree1 Rxd1 7.Rxd1 {90}
23123 <first : 11 94 1432 11269728 t+ 1...Rxc1 2.Rxc1 Bc4 3.Nd2 Rd4 4.Nxc4 bxc4
5.d7 Ke7 6.d8=Q+ Kxd8 7.g3
25396 <first : 11 107 1658 13166392 t 1...Rxc1 2.Rxc1 Bc4 3.Nd2 Rd4 4.Nxc4 bxc4
5.a4 g5 6.Kf2 f5 7.Rc3 h5 {80}
28831 <first : 11 108 2002 16214070 t+ 1...Rd3 2.Rfd1 Rxd1+ 3.Rxd1 Ke8 4.Nd4 Kd7
5.Nf5 Bb3 6.Rd3 Re1+ 7.Kh2 Bc4 8.g3 {90}
[Event "WB 08/2002 League E"]
[Site "LYAPKO,Mukachevo,AMD K6-2/450"]
[Date "2002.11.01"]
[Round "15.2"]
[White "Ldb_20c"]
[Black "Amateur 2.4"]
[Result "1-0"]
[TimeControl "1800"]
[ECO "C99"]
[Opening "Ruy Lopez: closed, Chigorin, 12...c5d4"]
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8.
c3 O-O 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 cxd4 13. cxd4 Bb7 14. Nf1
Rac8 15. Bd3 Nc6 16. Be3 Nb4 17. Ng3 Nxd3 18. Qxd3 Qc2 19. Qxc2 Rxc2 20.
Nf5 Re8 21. Bg5 Rxb2 22. Bc1 Rc2 23. Ba3 Bf8 24. Bxd6 Nxe4 25. Bxf8 Kxf8
26. Nxe5 Bc8 27. f3 Bxf5 28. fxe4 Be6 29. a3 f6 30. Nf3 Rc3 31. Rec1 Rec8
32. Rf1 R8c4 33. d5 Bg8 34. d6 Rxe4 35. Rac1 Rec4 36. d7 Ke7 37. Rcd1 Kd8
38. Rfe1 Bf7 39. Nd4 Rc1 40. Rxc1 Rxd4 41. Rc8+ Kxd7 42. Ra8 Bd5 43. Rxa6
Ra4 44. Rxa4 bxa4 45. h4 g6 46. Kf2 f5 47. h5 Bc6 48. h6 Kd6 49. Rd1+ Kc7
50. g3 Be4 51. g4 g5 52. Ke3 Kc6 53. Rf1 Kd7 54. gxf5 Bc2 55. Kd4 g4 56.
Ke5 Ke8 57. Rc1 Bb3 58. Rc8+ Kd7 59. Rh8 g3 60. Rxh7+
{Black resigns} 1-0
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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