Author: Jeremiah Penery
Date: 22:02:25 02/10/00
Go up one level in this thread
On February 10, 2000 at 19:48:08, Dann Corbit wrote:
>On February 10, 2000 at 08:11:34, Guido wrote:
>
>>On February 08, 2000 at 20:11:50, Dann Corbit wrote:
>>
>>>2bnN1k1/6P1/4p3/1P2N1P1/3K4/8/8/8 w - -
>>
>>To find Pg5-g6 my unknown mate solver spends:
>>
>>- 0.08 s CPU time if Pg5 is the first piece in the white pieces list
>>- 0.26 s CPU time if Pg5 is the last piece in the white pieces list.
>>
>>My program examines all the possible moves following the order of the pieces in
>>the input.
>>I use a P133 I processor.
>>
>>Instead my program cannot solve in reasonable time this (not simple) 11 moves
>>mate:
>>
>> 6n1/qp2b3/1p4K1/p4N2/2B2k1p/4pP2/4p2P/4N3 w - -
>>
>>The author should be S. Schneider - 1° Award Deutsche Schachz. 1960
>>
>>Which program solves it?
>
>Chest. Took quite a while, but the machine was busy doing stuff.
>
>E:\crafty\Release>chest319 -b -z 11 epd.epd
>6n1/qp2b3/1p4K1/p4N2/2B2k1p/4pP2/4p2P/4N3 w - - acn 403261928; acs 15956; bm
>Nd4; ce 32746; dm 11; pv Nd4 Ke5 Nb5 Kf4 Bd5 Ke5 Bxg8 Kf4 Bd5 Ke5 Bc4 Kf4 Nd4
>Ke5 Nf5 Kf4 h3 b5 Nd3+ Kxf3 Bd5#;
My modified Crafty 17.7 finds this in just over 11 minutes (on a semi-busy
machine):
16 11:14 Mat11 1. Nd4 Ke5 2. Nb5 Kf4 3. Bd5 Ke5 4.
Bxg8 Kf4 5. Bd5 Ke5 6. Bc4 Kf4 7. Nd4
Ke5 8. Nf5 Kf4 9. h3 Ba3 10. Nd3+ Kxf3
11. Bd5#
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