Author: Jeremiah Penery
Date: 09:38:18 03/10/99
Go up one level in this thread
On March 10, 1999 at 02:33:14, Peter Kappler wrote:
>
>8/8/4kpp1/3p1b2/p6P/2B5/6P1/6K1 b - - bm Bh3; id "Topalov-Shirov Linares 98";
>
>
>Does everybody remember this game? It's from last year's Linares tournament,
>where Shirov played a shocking bishop sacrifice in the endgame and won
>brilliantly. I believe that post-mortem analysis proved it was the only way to
>win. (Please correct me if this is wrong)
>
>I watched this game live on ICC with dozens of others, and we were all quite
>impressed with Shirov's powers of calculation.
>
>This *should* be an extremely difficult problem for computers - but I'm sure
>somebody will tell me that Hiarcs or some other commercial program can solve it
>in 10 seconds.
>
>Just curious...
>
>--Peter
Here is some Crafty output after I made the moves 1. ...Bh3 2. gxh3
19 26:25 0.43 2. ... f5 3. Kf2 Kd6 4. Bd4 Kc6 5.
Ke3 Kb5 6. Kd3 a3 7. Ba1 Kc5 8. Be5
a2 9. Ba1 f4 10. Ke2 d4 11. Kf3 d3
12. Kxf4
19 56:46 ++ 2. ... Kf5!!
19-> 62:48 0.82 2. ... Kf5
20 68:52 -- 2. ... Kf5
20 116:20 ++ 2. ... Kf5!!
20-> 144:30 0.81 2. ... Kf5
21 198:02 ++ 2. ... Kf5!!
21 261:49 2.29 2. ... Kf5 3. Kf2 Ke4 4. Bxf6 d4 5.
h5 gxh5 6. Be7 Kd3 7. Bc5 Kc4 8. Bf8
Kb3 9. h4 Kc2 10. Bb4 d3 11. Ke3 a3
12. Kd4 a2 13. Bc3
I guess it's finally seeing the win after >4 hours. From the original position,
a 15-ply search showed 1. a3 with a score of +3.xx. I'm going to see what
happens after 1. ...a3.
Jeremiah
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