Author: Jeremiah Penery
Date: 18:56:11 03/04/99
Go up one level in this thread
On March 04, 1999 at 21:12:40, James Robertson wrote:
>Today my program played a game to this position with SSEChess:
>
>2rq3r/6bk/pPB1b1pp/5p2/2NP1n2/5N2/PP1Q1PP1/2R2RK1 w - -
>
>Here my program played Nce5? which leads to a forced loss of material after 1.
>... Bxe5 Nxe5 Qg5.
>
>I ran some analysis with my program, and it seems unaware of the impending
>disaster because it can push it away with moves like b7 and Qc2. It seems to see
>a general decline of the score as time goes on, but still walks into it with
>Nce5. My question is: can any (amateur) program avoid Nce5 in less than about 10
>seconds? Crafty switches to Na3 fairly fast, and I'm curious of what other
>people will say.
>
>Currently, on depth 10, my program (it's still thinking!) failed low with Qxf4,
>score 125. I wonder what it will say when it finishes depth 10.
>
>James
>
>
>JR's CP
>Version 0.3, 03-04-99
>
>level 1 20 0 white go
> 1 225 0 233 Nce5
> 2 221 0 1034 Nce5 Nd5
> 3 264 0 3413 Nce5 Nd5 b7
> 4 260 170 17815 Nce5 Bxe5 Nxe5 Qh4
> 5 270 720 89373 Nce5 g5 b7 Rc7 Qb4
> 6 224 3080 349697 Nce5 Bxe5 b7 Rxc6 Rxc6 Bd6 Rxa6
> 7 224 9400 1091111 Nce5 Bxe5 b7 Rxc6 Rxc6 Bd6 Rxa6
> 8 190 36200 4194867 Nce5 Bxe5 b7 Rb8 Nxe5 Qxd4 Qxd4 Ne2+ Kh1 Nxd4
> 9 164 157200 19320933 Nce5 Bxe5 Nxe5 Qg5 Qc2 Nxg2 Nf3 Qg4 b7
If you let it think longer on Nce5, white still has a nice advantage after
1. Nce5 Bxe5 2. Nxe5 Qg5 3. Rfd1! Rxc6 4. Qxf4 Qxf4 5. Rxc6 Bd5 {5. ... Re8 6.
b7 Rb8 7. Rxe6 Rxb7 8. Rxa6 Qe4 9. b3 Qe2 10. Rd3 Re7 11. Rd6 Qe1+ 12. Kh2 Qxf2
13. Nxg6} 6. Rc7+ Kg8 7. b7 Bxb7 8. Rxb7 Qe4 9. Ra7 Qc2 10. Re1 Rh7 11. Ra8+ Kg7
12. Rxa6 Qxb2 13. Rxg6+ Kh8 14. d5 Qxa2
Both lines leave white at about +2.5.
Jeremiah
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