Author: leonid
Date: 04:31:40 02/18/02
Go up one level in this thread
On February 18, 2002 at 04:00:36, Angrim wrote: >On February 17, 2002 at 18:34:11, leonid wrote: > >>On February 17, 2002 at 17:06:01, Angrim wrote: >> >>>On February 17, 2002 at 15:26:29, leonid wrote: >>> >>>>[D]B2R3B/2qrq3/PqNkNqRq/b6P/R1qrQ2q/P1Q1n2P/b1nNq2p/Q6K w - - >>>> >>>>Please indicate your result. >>>> >>>>Thanks, >>>>Leonid. >>> >>>pn-search on Athlon 1.2ghz: >>>proved that move e4e5 wins, 9 turns >>>PN:199372 evals, 6835 expands, 0.98 seconds >>> >>>pn^2 search same comp: >>>proved that move e4e5 wins, 9 turns >>>PN2:1408934 evals, 53176 expands, 7.80 seconds >> >> >>Time is excellent but I am not sure about 9 turns. This positions is mate in 10 >>moves. > >My "turns" count is number of pairs of white move+black move. >So the final mating move by white does not increase the turns count. >This is a result of my storing distance as ply/2 to save 1 bit. Well! So, your program found mate also in 10 moves. Good, since this signify not only quick mate but also shortest one. This position is not simple since by brute force it could expected to be solved in hours. I never tried it by brute force 10 moves deep but 9 took almost 2 hours to respond. Leonid. > >Angrim >>By selective LLchess find mate in 5 seconds. Celeron 600Mhz. No hash. >> >>Leonid.
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