Author: Uri Blass
Date: 10:06:14 12/01/05
Go up one level in this thread
On December 01, 2005 at 12:46:53, Tord Romstad wrote: >On December 01, 2005 at 10:42:00, Steve Maughan wrote: > >>Centrino 2 GHz >> >>[D]3n3k/bp3pp1/8/8/R1Q2R2/6p1/B2p1PP1/q1rn2K1 w - - >> >>Engine: Glaurung Mainz (128 MB) >>by Tord Romstad >> >>10/45 0:11 0.00 1.Rh4+ Kg8 2.Rh8+ Kxh8 3.Qh4+ Kg8 >> 4.Qxd8+ Kh7 5.Rh4+ Kg6 6.Qd6+ Qf6 >> 7.Qxg3+ Qg5 8.Qd6+ Qf6 9.Qg3+ Qg5 (4.858.674) 431 >> >>11/47 0:21 +M19 1.Rh4+ Kg8 2.Rh8+ Kxh8 3.Qh4+ Kg8 >> 4.Qxd8+ Kh7 5.Rh4+ Kg6 6.Qd3+ f5 >> 7.Qxg3+ Kf6 8.Qd6+ Kg5 9.Rh5+ Kxh5 >> 10.Bf7+ Kg5 11.Qg3+ Kf6 12.Qg6+ Ke5 >> 13.Qe6+ Kf4 14.g3+ (9.646.864) 453 > >Hi Steve, > >The PV is incomplete, which makes me a bit worried. Glaurung should never >announce >mate unless the PV ends in a mate. Do you use a GUI or some other tool which >truncate >the PVs? Otherwise, I have a new bug to track down. :-( > >The current development version of Glaurung is much faster in this position, by >the way. >On my iMac G5 (which is about half as fast as your Centrino), it announces mate >in 21 >after 6 seconds and 8 plies, and reduces this to mate in 19 at the next >iteration after 11 >seconds. The reason for the improved solution time is simple: I am >experimenting with >unlimited checks in the qsearch (Glaurung Mainz searches checks only in the >first 3 plies >of the qsearch). > >Tord unlimited checks in the qsearch cannot work. You may not have a limit of plies but with no limit the search is going to explode. Uri
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