Author: Larry Griffiths
Date: 19:23:47 09/06/00
Go up one level in this thread
On September 06, 2000 at 22:17:55, William Bryant wrote: >On September 06, 2000 at 22:10:13, William Bryant wrote: > >>On September 06, 2000 at 07:34:48, leonid wrote: >> >>>Hello! >>> >>>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. >>> >>> 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. >>> >> >>Screamer solves this one instantly (in debug mode running in background) >> >>Welcome to Screamer 1.00 Build 55 >>Current Hash Table Size: 16384 K bytes >>Current Pawn Hash Size: 4096 K bytes >>Debug Control On >>PVS Search >>NULL move Search >>Opening Book loaded and enabled >>3 and 4 Piece Table Bases enabled >>1490 kb of Ram used for decompression tables >>1024 kb of Ram used for EGTB buffers >> >>New Board Position >>kb6/B3P3/K1P5/p7/P7/3r4//8/8 w >>Move 1 W>> >>The Current Search Time: 60 seconds >>Trying Book Move >>PLY NODES TIME SCORE PV >>__________________________________________________ >> 5/00 8601 0.249 ++ >> 5/00 13767 0.478 +327.38 e8=Q Rb3 Qxb8+ Rxb8 Bxb8 Kxb8 > 6/00 30415 0.638 +327.58 e8=Q Rb3 Qd7 Rb6+ Bxb6 Bc7 Qc8+ Bb8 Qb7++ > >(left a line off sorry). > >> >>William >>wbryant@ix.netcom.com Glad you posted this, I was going to check for a bug in my program since your mate was shorter than mine :). Larry.
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