Author: F. Huber
Date: 06:17:48 02/04/06
Hello mate problem fans, a new version of the mate solver ChestUCI 4.3 is available! There are only 2 new features: 1) a new option ´AutoLogfile´: if switched ON, then ChestUCI automatically writes all solutions to the log-file ´ChestLog.txt´. This might e.g. be useful, when the chess-GUI (e.g. Arena) is solving a complete EPD-testsuite of mate problems - in this case you´ll find all solutions in the usual format (i.e. with times and parameters) of the ChestUCI-database in this log-file. 2) the range (and the meaning) of the special parameter ´ChecksOnly´ has been extended to 0..31 by adding 3 more values (C4/C8/C16). A short explanation of all possible values from Chest´s point of view: C1 ... only own check moves C2 ... no opponent check moves C4 ... no opponent capture moves \ C8 ... no own capture moves > new! C16 ... no own check moves / These values can be used in any combination (except of course C1+C16). Since these parameters (especially the new C4/C8/C16) are quite hard restrictions, they will work only for some special mate problems, and so they have to be tested/entered manually - only C1 is tried automatically by ChestUCI´s Automatic/AutoTurbo-mode. But IF one of these C-values works, then it gives impressive results: 5b2/8/1p6/pPp1p1p1/p1PpPpP1/K2P1P2/N2N4/k7 w - - bm #30; 07:51 @ C2/R0/K1/P2/X5; without C4 00:29 @ C6/R0/K1/P2/X5; with additional C4 (factor 16) 4B1Rn/1p1p1rbr/3P2kp/3P3R/1p1p2P1/1P2p3/2P1P3/4K3 w - - bm #35; 00:24 @ C4/R0/K2/P6/X8; with C4 (VERY/TOO long without C4) 8/4PB2/4NPK1/5PP1/2P5/N7/p7/k1b1Q3 w - - bm s#20; 4300 sec. with C0/R0/K2/P1/X1 54 sec. with C12/R0/K2/P1/X1 (factor 80) The new version of ChestUCI 4.3 can be downloaded at: http://www.uciengines.de/UCI-Engines/Chest/chest.html Regards, Franz.
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