Author: Robert Hyatt
Date: 17:23:41 12/07/99
Go up one level in this thread
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 - - I get this on my tiny sony notebook: 20 27:29 4.21 1. Rc4 Qd7 2. Rd5 Qe8 3. Re4 Qb8 4. Re1 Qa8 5. Rf1 Qe8 6. Rd4 Qa8 7. Re4 Qc8 8. Ra4 Qe8 9. Ra3 Qd8 10. Kxh2 Qh4+ 11. Kg1 Qe4 It has liked Rc4 since about 40 seconds, and the score has gone up every iteration. Quad xeon would be 3-4-5 times faster... > >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
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.