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Subject: Re: Two mate position to solve.

Author: Severi Salminen

Date: 05:49:11 09/06/00

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>Please, solve this position and say how much difference your hash table did.
>
>Indicate any parameter of your search that you consider important.
>
>It is pretty normal position from the book.
>
[D]kb6/B3P3/K1P5/p7/P7/3r4//8/8 w - -
>
>My solver could not resolve it by selective search and went paintful 24 sec (AMD
>400) before finding the mate. Mine have no hash tables. When I went to see it on
>Rebel 10, I was impressed. His time in solving the position knew around 6 fold
>improvement between solution without hash and with it. His hash was 28 M.
>
[D]q1bkb1q1/2nqn3/1BrnrB2/1R1Q1R2/1NNQNN2/2Q1Q3/2QQQ3/3K4 w - -
>
>This last, is the fantasy position. Did it yesterday. Also could not solve it at
>minimum number of moves by selective search. It took lengthy 18.5 min to reach
>minimum number of moves for mate by brute force. Selective search can reach it
>only if one move more is permitted. Then it take it in 2 sec. But how much hash
>table could help in this position?
>
>Thanks,
>Leonid.



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