Author: leonid
Date: 14:59:54 02/05/01
Go up one level in this thread
On February 05, 2001 at 08:56:32, Uri Blass wrote: >On February 05, 2001 at 08:07:35, Christophe Theron wrote: > >>On February 05, 2001 at 07:23:58, leonid wrote: >> >>>Hi! >>> >>>If you like to solve forced mate position full of "depleted uranium"... >>> >>>[D]NKBN4/QRQ3rR/2Qb2r1/N1b1nb2/B2nbbbB/1RNqqqq1/8/2N2k2 b - - >>> >>>Please, indicate your result. >>> >>>Thanks, >>>Leonid. >> >> >>Chess Tiger 14 (experimental version) finds: >>* a mate in 11 in 6.21s (Bxa7+...) >>* a mate in 9 in 15.27s (still Bxa7+...) >>on a K6-2 450 with 6Mb hash tables. >> >> >> Christophe > >It gives a good competition to chessmaster6000(ss=10). > >Chessmaster6000 can see mate in 10 in 1 second but needed 17 seconds to see mate >in 9 on my PIII450(128 mbytes hash). > >Is your experimental version a version for playing games and not for finding >mates? > >Chessmaster is for playing games and I guess that the programmer could do it >faster in finding mates if this was his target. > >Uri Thanks, Uri, for finding that mate in 9! Actually, when I created this position yesterday, I found mate in 12 by selective search in 12 moves. After seeing that mate existe in 9, I came to look more carefully 9 move by changing certain variable. It is accessible all the time for obtaining on the fly all kind of selective searches. Mate in 9 came instantly, just like you said. LLchess mate solver. AMD 400Mhz. No hash. For 12 and 9 moves mate came at the same time - 0.33 sec. For 9 moves: Bishop C5-A7 and Knight D4-C6. For 12 moves: Knight E5-C6 and Knight D4-C6. I not searched all posible moves for indicated depth. Two responses for the same depth came when search was done by two different versions of selective search. Leonid.
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.