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Subject: Re: Shirov's Computer Comments

Author: Frederic Louguet

Date: 12:23:08 11/11/98

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>Crafty (modified), PII 300, hash 24M + 5M(hashp) plays the move in 2:04, finds
>mate:
>-----
>               13     3:07  Mat14   1. Rxg7+ Rxg7 2. Rxg7+ Kxg7 3. Qe7+
>                                    Kg8 4. Qe8+ Kg7 5. h6+ Kxh6 6. Qf8+
>                                    Kh5 7. Qf7+ Kh4 8. Qxh7+ Kg3 9. Qg7+
>                                    Kh2 10. Kf2 Qc5+ 11. Kf1 Qxc4+ 12.
>                                    bxc4 Kh3 13. Qg2+ Kh4 14. Qh2#
>-----
>Unmodified Crafty plays it in 2:25 and finds mate in 5:35
>
>I'm a bit surprised that Fritz didn't find this in at least a matter of minutes,
>based on all that I've heard about it.  Anyone with Fritz confirm this?
>
>Jeremiah

It does not seem to be a difficult position for a tactically skilled program. On
a Pentium-II 375 Mhz, Chess Wizard plays Txg7! in exactly 48 seconds and
announces mate in 14 in 1 minute 15 seconds with the following :

1.Rxg7+ Rxg7 2.Rxg7+ Kxg7 3.Qe7+ Kg8 4.Qe8+ Kg7 5.h6+ Kxh6 6.Qf8+ Kh5 7.Qf7+ Kh4
8.Qxh7+ Kg3 9.Qg7+ Kh2 10.Kf2 Qc5+ 11.Kf1 Qg1+ 12.Qxg1+ Kh3 13.Qg2+ Kh4 14.Qh2#
( Mate14)




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