Author: Heiner Marxen
Date: 11:16:54 06/02/01
Go up one level in this thread
On June 02, 2001 at 08:56:05, Eduard Nemeth wrote:
>On June 02, 2001 at 07:44:10, leonid wrote:
>
>>Hi!
>>
>>If you want to solve one mate then try this:
>>
>>[D]1rqkqr2/nPpqpPn1/QQqqqQQ1/Qbb1BBQ1/1N3N2/8/3Q4/R2K2R1 w - -
>>
>>Please indicate your result.
>>
>>Thanks,
>>Leonid.
>
>Hello Leonid!
>
>I give this position to analysis Genius6 (MCS) on P600 with 32 MB hash.
>
>Analysis by Genius6:
>
>{Mate in 10 Moves after 5:14 minutes)
>
>deph 5/17 HV: Mate in 10: 1.fxe8Q Rxe8 2.Nxc6+ Bxc6 3.Nxe6 Nxe6 4.Qxc7
>
>Regards,
>Eduard
Hi Eduard,
On my K7/600 with 350 MB hash Chest needs 28.8 minutes to find that 6 of the
73 initial legal moves lead to a mate in 9, so this is one of the rare
cases, where Genius does not give optimal results straightaway.
Here are the PVs of Chest:
Nxc6+ Bxc6 fxe8Q+ Nxe8 bxc8Q+ Rxc8 Nxe6+ Q7xe6 Qxe7+ Qxe7 Bxd6 Bf3+ Kc1
Ba3+ Bxa3+ Bd5 Bxe7#
Nxe6+ Nxe6 fxe8Q+ Rxe8 bxc8Q+ Nxc8 Nxc6+ Bxc6 Qxc6 Bb6 Qxe8+ Qxe8 Qg8
Nf8 Qxe8+ Kxe8 Qgxf8#
bxc8Q+ Nxc8 fxe8Q+ Rxe8 Nxe6+ Nxe6 Nxc6+ Bxc6 Qxc6 Bb6 Qxe8+ Qxe8 Qg8
Nf8 Qxe8+ Kxe8 Qgxf8#
bxc8R+ Nxc8 fxe8Q+ Rxe8 Nxe6+ Nxe6 Nxc6+ Bxc6 Qxc6 Bb6 Qxe8+ Qxe8 Qg8
Nf8 Qxe8+ Kxe8 Qgxf8#
fxe8Q+ Nxe8 bxc8Q+ Rxc8 Nxe6+ Q7xe6 Nxc6+ Bxc6 Qxe7+ Qxe7 Bxd6 Bf3+ Kc1
Ba3+ Bxa3+ Bd5 Bxe7#
fxe8R+ Nxe8 bxc8Q+ Rxc8 Nxe6+ Q7xe6 Nxc6+ Bxc6 Qxe7+ Qxe7 Bxd6 Bf3+ Kc1
Ba3+ Bxa3+ Bd5 Bxe7#
The huge hash table contributes not more than a factor 2 (for speed).
Otherwise this is a typical "Leonid": lots of checks, and nearly every move
is a capture ;-)
Cheers,
Heiner
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