Author: Vincent Diepeveen
Date: 18:49:53 12/07/99
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On December 07, 1999 at 21:41:18, Joe Pechie wrote: >On December 07, 1999 at 19:44:35, Vincent Diepeveen wrote: > >>Hello to All studiers of the game of chess with a program, >> >>Here a cool study which has next problems >> - some zugzwangs (black getting forced to move the queen) >> - the line(s) that win for white are forced till the end (singular) >> >>7k/2q3pP/6P1/8/8/8/6Pp/2RR3K/w - - >> >>black timeleft=666:40.00.00 >> - = - = - = - k ... 1 ... >> = - q - = - o O ... 2 ... >> - = - = - = O = ... 3 ... >> = - = - = - = - ... 4 ... >> - = - = - = - = ... 5 ... >> = - = - = - = - ... 6 ... >> - = - = - = O o ... 7 ... >> = - R R = - = K ... 8 ... >>white timeleft=666:40.00.00 >>white to move >> >>I estimated that for a program doing checks in qsearch >>and NOT having any extension and not having hashtable luck >>the solution is 22 ply to see. 23 ply otherwise. >> >>the solution is not found yet by my program (running >>at a dual celeron 550 with 300mb hash now under linux of >>cuz), as it's PVs are crap so far and it gives black the >>chance to sac queen somewhere near end of pv. >> >>I'm not a dreamer so i'm not gonna ask for an output >>of deep blue junior, but i love to see whether other >>progs make a chance here. >> >>It's adviced to use KRPKP and KPKP KPK >>egtb at least for this position, that should produce when >>seeing the good lines a score at HUGE depths of mate in XXX >>or something of over +15.0 >> >>I'm not using them with diep here, so perhaps diep never finds it... >>...i just pray for transposition luck right now... ...right now >>score is +7.7 which is by accident also the score for KRP KP here >>but i guess it didn't see it yet. >> >>Vincent > It took 9 minutes of searching with junior 5.0 and a 233mhz pent to find rc4 at >depth-19. Will let it chug away on this one for a while >Joe I'm interested in score and mainline. thanks in advance, Vincent
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