Author: scott farrell
Date: 15:12:04 12/14/03
Go up one level in this thread
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 - -
>
it finds the move at depth 5 after about 30K nodes, and fails high again on it
at depth 9 for a draw score. I think it depends on your eval after the sac, if
its still below draw the engine will play for the draw, otherwise the draw is
not useful.
Scott
->1/1(3) -1.51 0.312secs 147 QB4
->2/2(5) -1.66 0.442secs 611 QH5 BxA7
->3/4(5) -1.66 0.589secs 2094 QH5 BxA7 NxH2
->4/4(8) -1.66 0.678secs 7002 NxE4 NxQ NxQ+ RxN B6
found betaFlag at root:-302 >= 99999 : 24,42
->5/7(9) -0.9 0.954secs 31655 QxN PxQ NxE4 QE1 NxC3+ KC1
->6/8(10) -0.9 1.014secs 43119 QxN PxQ NxE4 QE1 NxC3+ KC1
->7/11(9) -0.9 1.355secs 82367 QxN PxQ NxE4 QE1 NxC3+ KC1
->8/13(10) -0.9 1.852secs 197983 QxN PxQ NxE4 QE1 NxC3+ KC1 NxR
, D8/13(10): -0.9 : QxN , 1.852/20000.0 secs - NPS: 106902 , bf:1.41, avbf:1.89
IID:308/447, ks:-0.9/-0.14/3/0/6/3, mateN: 4, mateNQ: 7, threatN: 3/5, N: 63780,
nmN: 134203, qN%: 31, qNP%: 54, ext:C1447/N5/R189/S36/P0/F0/D0, bc%:92.6, pv%:7
7, lazyE:60%, maxPos:2.04/1.6, fut:73834/84812/87%, red:1599/1/13853/12%, nmTrys
:0/15004/566/0/, nm%:0/56/60/, cHit: 10%, cqHit: 1%, cUse%: 11, cStore:14444,pc%
:98,pcc:14,pcc%:0,pv:A5C3 PxQ NxE4 QE1 NxC3+ KC1 NxR
nominal guess:-1.21 -0.75
d9/17(16) 0/53 -0.75 3.31secs 417982 QxN PxQ NxE4 QE1 NxC3+ KC1 NxA2+ KB1 NC
3+
fail high at root
d9/19(16) 0/53 0.0 5.215secs 858770 QxN PxQ NxE4 QE1 NxC3+ KC1 NxA2+ KB1
NC3+ KC1 NA2+ KB1 NC3+ KC1 NA2+ KB1 NC3+ KC1 NA2+ KB1 NC3+ KC1 NA2+ KB1 NC3+ KC1
NA2+ KB1 NC3+ KC1 NA2+ KB1 NC3+ KC1 NA2+ KB1 NC3+ KC1 NA2+ KB1 NC3+ KC1 NA2+ KB1
NC3+ KC1 NA2+ KB1 NC3+ KC1 NA2+ KB1 NC3+ KC1 NA2+ KB1 NC3+ KC1 NA2+ KB1 NC3+
>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
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