Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Linares '98 Topalov-Shirov ...Bh3!!

Author: blass uri

Date: 09:55:18 03/10/99

Go up one level in this thread



On March 10, 1999 at 12:38:18, Jeremiah Penery wrote:

>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

What is the machine that you used for crafty?

Uri



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.