Author: Timothy J. Frohlick
Date: 20:09:59 10/20/02
Go up one level in this thread
Will,
On the same computer as with Chess Genius 7.0 using 32 MB Hash Hiarcs 8.0
gets the "correct" sequence but takes two minutes.
4rrk1/pp2q2p/1npp1np1/6QP/8/2N2P2/PPP3P1/2KR1B1R b - - 0 1
Analysis by Hiarcs 8:
1...Nfd5 2.Qxe7 Rxe7
= (-0.07) Depth: 1 00:00:00
1...Nfd5 2.Qxe7 Rxe7
= (-0.07) Depth: 2/7 00:00:00
1...Nfd5 2.Qxe7 Rxe7
= (-0.07) Depth: 3/8 00:00:00
1...Nfd5 2.Qxe7
= (0.19) Depth: 4/11 00:00:01
1...Nfd5 2.Qxe7 Rxe7 3.hxg6
² (0.66) Depth: 4/12 00:00:01
1...Nfd5 2.Qxe7 Rxe7 3.hxg6 hxg6 4.Ne4 Re6
± (0.84) Depth: 5/17 00:00:02 10kN
1...Nfd5 2.Qxe7
± (1.09) Depth: 6/17 00:00:02 25kN
1...Nfd5 2.Qxe7 Rxe7 3.Nxd5 Nxd5 4.hxg6 hxg6 5.c4 Nf4 6.Rxd6 Re1+ 7.Kd2
+- (1.41) Depth: 6/21 00:00:03 31kN
1...Nfd5 2.Qxe7 Rxe7 3.Nxd5 Nxd5 4.hxg6 hxg6 5.c4 Nf4 6.Rxd6 Re1+ 7.Kd2
+- (1.41) Depth: 7/21 00:00:05 104kN
1...Nfd5 2.Qxe7 Rxe7 3.Nxd5 Nxd5 4.hxg6 hxg6 5.c4 Nf4 6.Rxd6 Re1+ 7.Kc2 Rfe8
± (1.23) Depth: 8/23 00:00:10 269kN
1...Nfd5 2.Qxe7
+- (1.48) Depth: 9/25 00:00:19 611kN
1...Nfd5 2.Qxe7
+- (1.48) Depth: 9/25 00:00:22 689kN
1...Nfd5 2.Qxe7 Rxe7 3.Nxd5 Nxd5 4.hxg6 hxg6 5.c4 Ne3 6.Rxd6 Nxf1 7.Rxf1 Kg7
8.g3 Rfe8
± (1.31) Depth: 10/30 00:01:18 2608kN
1...Qe5 2.Qxe5
± (1.23) Depth: 10/30 00:01:59 4101kN
1...Qe5 2.Qxe5 dxe5 3.hxg6 hxg6 4.Bd3 Kg7 5.Ne4 Nxe4 6.Bxe4 Rd8 7.c3 Rxd1+
8.Rxd1
± (1.10) Depth: 10/30 00:02:04 4268kN
1...Qe5 2.Qxe5 dxe5 3.hxg6 hxg6 4.Bd3 Kg7 5.Ne4 Nxe4 6.Bxe4 Rd8 7.c3 Rxd1+
8.Rxd1 Rh8 9.Rd6 Rh1+ 10.Kc2
± (1.07) Depth: 11/30 00:02:50 5727kN
(Frohlick, MyTown 20.10.2002)
On October 20, 2002 at 22:31:53, Will Singleton wrote:
>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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