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Subject: Re: For mate experts - how many moves?

Author: John Merlino

Date: 08:14:09 05/05/04

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On May 05, 2004 at 01:21:08, John Merlino wrote:

>On May 05, 2004 at 01:20:31, John Merlino wrote:
>
>>On May 05, 2004 at 00:52:06, Jouni Uski wrote:
>>
>>>[D]3qk3/8/8/8/8/8/PPPPPPPP/RNBQKBNR w KQ -
>>>
>>>Mate solver Chest takes hours to finalize 10 moves so I switch to playing
>>>engines. Shredder 8 announces mate with d4 after 15 minutes, but it's useless
>>>when number of moves is not displayed :-) Some engines agree, that best line
>>>is e4 Qg5 d4 Qg6 and mate in 14. Is this the best? What thinks Chessmaster?
>>>
>>>Jouni
>>
>>Not sure...yet. After forcing 1.e4 Qg5, it takes CM_SKR 1:22 to announce a Mate
>>in 12.
>>
>>Time	Depth	Score	Positions	Moves
>>1:22	1/12	Mate12	23507783	2.d4 Qg6 3.Qf3 Kd7 4.Nc3 Qe6 5.Bb5+
>>					Kc7 6.Qf8 Kb7 7.Bf4 Qc8 8.Qe7+
>>					Kb6 9.Nd5+ Kxb5 10.Qb4+ Kc6 11.Qb6+
>>					Kd7 12.Qd6+ Ke8 13.Qe7#
>>1:30	2/13	Mate12	26233063	2.d4 Qg6 3.Qf3 Ke7 4.Nc3 Qf7 5.Bg5+
>>					Kf8 6.Bh6+ Ke7 7.Nd5+ Qxd5 8.exd5
>>					Kd6 9.Qf6+ Kd7 10.Qc6+ Ke7 11.Qc7+
>>					Kf6 12.Qg7+ Kf5 13.Bd3#
>>
>>However, from the initial position, after more than 10 minutes there was still
>>no mate found, and 1.e3? Kd7? was considered best. I'll let it run overnight....
>
>Clarification -- this is on a P4-2.4....
>
>jm

CM_SKR on an AMD 2500+ finally got down to Mate in 12 from the initial position
after 1:27:08.

jm



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