Author: Tord Romstad
Date: 15:07:23 02/20/04
Go up one level in this thread
On February 20, 2004 at 14:29:20, Kurt Utzinger wrote:
>On February 20, 2004 at 11:50:30, Tord Romstad wrote:
>
>>In a blitz game between Gothmog and Phalanx, played earlier today, the following
>>position was reached:
>>
>>[D]3rr2k/pp3q1p/2p2pp1/8/2PP4/3B1Q2/PBN2PPP/6K1 w - -
>>
>>Without doing a search, Gothmog thinks white has a winning advantage. The
>>static eval returns a score of +2.0, despite approximate material equality.
>>The big plus score for white seems to be almost entirely because of the
>>bishop pair (my bishop pair bonus is really big when the opposite side
>>has no minor pieces) and the weakness of black's a1-h8 diagonal.
>>
>>To this patzer's eyes, an advantage of +2 in this position seems to be
>>way too much. Should I have a closer look at my bishop pair bonus, or is
>>Gothmog's assesment of the position really OK?
>>
>>Tord
>
>
> Hi Tord
> Your program has not to blame. In my opinion, White has an almost
> decisive advantage in this position. I see no way how Black can prevent
> White from making rapid progress. Below I give two possible lines:
>
> 1.Ne3 Kg7 2.d5 Ref8 3.Be4 c5 4.Ng4 Qe7 5.Qf4 Rd6 6.h4 and White's position
> has much improved
Interesting. This is almost exactly what happened in the game, except that it
didn't
happen quite as quickly. Here's the full game:
[Event "Computer chess game"]
[Site "aload.uio.no"]
[Date "2004.02.20"]
[Round "1"]
[White "Gothmog 0.4.6f"]
[Black "phalanx"]
[Result "1-0"]
[TimeControl "240+1"]
1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O Nc6
8. c4 Nb4 9. Be2 O-O 10. Nc3 Be6 11. Be3 Bf5 12. Rc1 dxc4 13. Bxc4 c6 14.
Ne5 Nxc3 15. bxc3 Nd5 16. Qf3 Be6 17. Bd2 f6 18. Nd3 Qd7 19. Rfe1 Ba3 20.
Rxe6 Qxe6 21. Nf4 Qd7 22. Nxd5 Kh8 23. Ne3 Bxc1 24. Bxc1 Qe7 25. Nc2 Rfe8
26. Bd3 g6 27. c4 Qf7 28. Bb2 Rad8 29. Qf4 Re6 30. Ne3 Kg8 31. Bc3 Kg7 32.
a3 Rc8 33. Ng4 b6 34. a4 Qe7 35. Qh6+ Kh8 36. f3 Rg8 37. Qc1 Rd8 38. Be4
Red6 39. d5 cxd5 40. cxd5 Qf7 41. Qf4 Kg7 42. h4 Qe7 43. h5 Kf7 44. Qh6 Ke8
45. hxg6 hxg6 46. Qxg6+ Qf7 47. Nxf6+ Ke7 48. Qg3 Rxf6 49. Qe5+ Kd7 50.
Qxf6 Qxf6 51. Bxf6 Re8 52. Kf2 a6 53. Ke3 b5 54. axb5 axb5 55. Kd4 b4 56.
Bf5+ Kd6 57. f4 b3 58. Be5+ Ke7 59. d6+ Kf7 60. Kc3 Rg8 61. g4 b2 62. Kxb2
Rb8+ 63. Kc2 Rb6 64. g5 Ra6 65. g6+ Kf8 66. g7+ Kf7 67. Be6+ Kxe6 68. g8=Q+
Kd7 69. Qf7+ Kc6 70. Qc4+ Kb7 71. Qc7+ Ka8 72. Qc8+ Ka7 73. Bd4+ Rb6 74.
Qd8 Kb7 75. Qxb6+ Kc8 76. Qc7#
{Mate} 1-0
Nevertheless, this discussion has convinced me that a score of +2 in the given
position is indeed a bit too optimistic, and I should have a look at my eval
weights
when I am back from my holiday.
Thanks to everybody who has replied!
Tord
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