Author: Tord Romstad
Date: 13:40:14 12/14/03
Go up one level in this thread
On December 14, 2003 at 08:59:07, Anthony Cozzie wrote:
>On December 14, 2003 at 05:57:30, Tord Romstad wrote:
>
>>I've just completed a 100-game blitz match between Gothmog 0.4.2g and AnMon
>>5.21, which
>>was won by AnMon with a score of 59.5-40.5. Both engines won several really
>>cool games; I'm
>>beginning to become a fan of AnMon.
>>
>>In one of the games won by Gothmog, the following position arose:
>>
>>[D]2r1k2r/pp1bppbp/3p1np1/q7/4PPn1/1NN5/PPPQ2PP/1K1R1BBR b - -
>>
>>In this position, Gothmog played the spectacular queen sacrifice 13... Qxc3!?
>>and won
>>after 66 moves.
>>
>>Is this move really sound? Do any other engines like the sac?
>>
>>The game:
>>
>>[Event "Test4"]
>>[Date "2003.12.14"]
>>[Round "58"]
>>[White "AnMon 5.21"]
>>[Black "Gothmog 0.4.2g"]
>>[Result "0-1"]
>>[TimeControl "240+2"]
>>[PlyCount "131"]
>>
>>1. e4 c5 2. Nf3 Nc6 3. Nc3 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Be3 d6 7. Qd2
>>Nf6 8. f3 Bd7 9. O-O-O Rc8 10. Kb1 Ne5 11. f4 Neg4 12. Bg1 Qa5 13. Nb3
>>Qxc3 14. bxc3 Nxe4 15. Qd3 Nxc3+ 16. Kc1 Bf5 17. Qf3 Nxa2+ 18. Kd2
>>Bc3+ 19. Ke2 O-O 20. h3 Nf6 21. Nd4 Be4 22. Qg3 Bb4 23. Ra1 Nc3+
>>24. Kf2 Bxc2 25. Qh4 Nce4+ 26. Kf3 Rc3+ 27. Be3 Bb3 28. Re1 Bc5
>>29. Nxb3 Rxb3 30. Bc4 Rc3 31. Qh6 Nd2+ 32. Ke2 Bxe3 33. Rec1 Ra3
>>34. Rhe1 Nde4 35. Rca1 Ng3+ 36. Kf3 Rxa1 37. Rxa1 Nf5 38. Qg5 d5
>>39. Bd3 Bd4 40. Bxf5 Bxa1 41. Bd3 Bd4 42. Qh4 e6 43. Qe1 Kg7 44. Qb4
>>Bb6 45. Qe7 Rc8 46. Qxb7 Rc3 47. Ke2 Nh5 48. Kd2 Rc7 49. Qb8 Nxf4
>>50. Bf1 e5 51. g3 Ne6 52. Qa8 Nc5 53. Kd1 Re7 54. g4 e4 55. g5 d4
>>56. Bc4 e3 57. Qf3 Ne4 58. Qf4 Bc7 59. Qh4 Bg3 60. Qh6+ Kg8 61. Ke2
>>Bf2 62. Kf3 Nd2+ 63. Ke2 Nxc4 64. h4 d3+ 65. Kxd3 Ne5+ 66. Kc2
>>{White resigns} 0-1
>>
>>Tord
>
>
>a pretty amazing game!
I also thought so at first, but after analysing the position before black's 13th
move with
a few other engines I think Stuart Taylor is right: Almost all engines play the
move Qxc3.
Perhaps it really is black's best move after all (when I first saw it, I thought
it couldn't
possibly work).
>Zappa plays all of Anmon's moves except 28. Re1, where it prefers Qe1 (+1/4 pawn
>up for black). After Rd1 the score jumps to +1. Still, Zappa prefers white's
>position the whole way from 13 -> 27 :)
>
>1. Qe1 e5 2. fxe5 dxe5 3. Nxb3 Rxb3 4. Qd1 Ng5 5. Kf2 Nfe4 6. Kg1 Rxe3 7. Rxa7
>Nc3 8. Qd7
> = (-0.25) Depth: 11/24 00:01:48.60 38972kN
>1. Bb5 Bc5 2. Rhc1 Bxd4 3. Rxc3 Nxc3 4. Bxd4 Nxb5 5. Bxf6 exf6 6. Qxf6 Bd5 7.
>Kg3 Re8
> = (-0.05) Depth: 12/28 00:02:37.66 58309kN
>
>Hmm, I actually really like the look of 28 Bb5. QR v RRBPPP . . white should
>draw.
I agree, 28. Re1 and 28. Bb7 both look better than 28. Qe1.
Tord
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