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Subject: Re: New ChestUCI Ver.4.3

Author: John J. J. Smith

Date: 15:58:33 02/04/06

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On February 04, 2006 at 09:17:48, F. Huber wrote:

>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.


Thanks Franz for this and your help in using ChessUCI.

All the best.
John



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