Author: Will Singleton
Date: 19:31:53 10/20/02
In the game Amateur-Thinker (last round of WBEC Qualify A), Amateur had a edge
in the following position.
[D]4rrk1/pp2q2p/1npp1np1/6QP/8/2N2P2/PPP3P1/2KR1B1R b - - 0 17
Most programs lock onto Nfd5, and the line goes:
Nfd5 Qxe7 Rxe7 Nxd5 Nxd5 hxg6 hxg6 c4 Ne3 Rxd6 ~ +0.90 for white
(or) cxd5 hxg6 hxg6 Bd3 ~ +0.90 for white
and white is left with a definite edge, probably winning. Thinker, however,
played Qe5. This appears to be a very good move, leading to a drawish position:
Qe5 Qxe5 dxe5 hxg6 hxg6 Bd3 Kg7 ~ +0.50 for white
So Thinker's excellent 17...Qe5 allowed it to get to a drawish endgame, where it
outplayed Amateur and won. Thinker doesn't appear to output it's pv, so it
would be interesting if the author could post it. The question: is this
objectively a saving move, and if so, can others find it? If not, is Thinker
really that good?
[Event "WBEC4_Qualify_A"]
[Site "DUAL-P3-933"]
[Date "2002.10.19"]
[Round "19.2"]
[White "Amateur 2.3"]
[Black "Thinker 4.2a"]
[Result "0-1"]
[Number "36"]
[TimeControl "40/2400"]
1. d4 g6 2. e4 d6 3. Nc3 Bg7 4. Be3 Nf6 5. f3 O-O 6. Qd2 Nbd7 7. O-O-O e5
8. Nge2 Qe7 9. Bh6 Bxh6 10. Qxh6 Nb6 11. h4 Bd7 12. Qg5 exd4 13. Nxd4 c6
14. Nf5 Bxf5 15. exf5 Rae8 16. fxg6 fxg6 17. h5 Qe5 18. Qxe5 dxe5 19. hxg6
hxg6 20. Bd3 Kg7 21. Ne4 Nxe4 22. Bxe4 Rd8 23. Rxd8 Rxd8 24. b3 Nc8 25. a4
a5 26. c4 Rd4 27. Kc2 Nd6 28. Bd3 c5 29. Rd1 b6 30. Re1 Kf6 31. Kc3 g5 32.
Rh1 Rh4 33. Rxh4 gxh4 34. Kd2 Ne8 35. Bh7 Ng7 36. Bd3 Ne6 37. Be2 Nf4 38.
Bf1 Kg5 39. Ke3 Kf5 40. Kf2 Ne6 41. Bd3+ Kf4 42. Bb1 Nd4 43. Be4 Nxb3 44.
Bd5 Nc1 45. Be4 Na2 46. Bc2 Nc3 47. Kf1 Ke3 48. Ke1 Kd4 49. Bb3 Nb1 50. Bc2
Na3 51. Be4 Nxc4 52. Bc6 Ne3 53. f4 e4 54. f5 Nxg2+ 55. Kf2 Ne3 56. Bd7
Ng4+ 57. Kf1 h3 58. Be8 h2
{White resigns} 0-1
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