Author: leonid
Date: 16:16:29 09/04/01
Go up one level in this thread
On September 04, 2001 at 18:45:36, Peter Berger wrote: >On September 04, 2001 at 06:36:14, leonid wrote: > >>>Please indicate your result. >>> >>>Thanks, >>>Leonid. > >Chessmaster 8000 is simply without competition among the "normal" chessprograms >in your kind of positions . This is on an Athlon 1333 computer. First one is >solved instantly - second one 3 seconds . Solution time is excellent! Chessmaster 8000 for sure found mate by selective and its selective search is very effective. But how about brute force search? I am curious to know how he do on this sense. To spot its brute force search (just my suggestion) find what is the Chessmater time for 8 moves for the first position and in 12 moves for the second. In both he will not find the mate but probably will end by searching by brute force. If you could indicate its brute force search for two close moves (for 7 and 8 moves deep, for instance) it will be very revealing. This will permit to see his branching factor for this kind of search. Some programs are very efficent in brute force search but not that tuned for selective. The best brute force searcher that I saw here until now was Heiner's mate solver. His time is close to miracle. Cheers, Leonid. >Neue Stellung >2qqkrRB/2nq2PP/2qq2PR/2qPNPPB/2bPPNQK/2br4/2pq4/2nr4 w - - 0 1 > >Analysis by The King 3.12d (CMFun Personality): > >1.gxf8D+ Dxf8 2.Txf8+ Dxf8 3.g7+ Ddf7 4.Lxf7+ Dxf7 5.g8D+ Df8 6.Dh5+ Dg6 >7.Dgxg6+ Ke7 8.d6+ Dxd6 9.Dxd6# > +- (99.83) Tiefe: 4 00:00:00 >1.gxf8D+ Dxf8 2.Txf8+ Dxf8 3.g7+ Ddf7 4.Lxf7+ Dxf7 5.g8D+ Df8 6.Dh5+ Dg6 >7.Dhxg6+ Ke7 8.D8f7+ Dxf7 9.Dxf7# > +- (99.83) Tiefe: 5 00:00:01 148kN > >(Berger, Berlin 05.09.2001) > >Neue Stellung >2qqkrRB/2nq2PP/2qq2PR/2qPNPPB/2qPPNKQ/2bb4/2pq4/2nr4 w - - 0 1 > >Analysis by The King 3.12d (CMFun Personality): > >1.gxf8D+ Dxf8 2.g7+ Ddf7 3.Txf8+ Dcxf8 4.Lxf7+ Ke7 5.g8S+ Dxg8 6.hxg8S+ Dxg8 >7.d6+ Dxd6 8.g6+ Kf8 9.g7+ Dxg7+ 10.Lxg7+ Kxg7 11.Th7+ Kf8 12.Seg6+ Dxg6+ >13.Sxg6# > +- (99.75) Tiefe: 5 00:00:03 587kN >1.gxf8D+ Dxf8 2.g7+ Ddf7 3.Txf8+ Dcxf8 4.Lxf7+ Ke7 5.g8S+ Dxg8 6.hxg8S+ Dxg8 >7.d6+ Dxd6 8.g6+ Kf8 9.g7+ Dxg7+ 10.Lxg7+ Kxg7 11.Th7+ Kf8 12.Seg6+ Dxg6+ >13.Sxg6# > +- (99.75) Tiefe: 6 00:00:13 2187kN > >(Berger, Berlin 05.09.2001)
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