Author: Tony Werten
Date: 02:13:59 02/03/05
Go up one level in this thread
On February 02, 2005 at 13:55:45, Thomas Mayer wrote: >Hi Dieter, > >On February 02, 2005 at 12:40:54, Dieter Buerssner wrote: > >>On February 01, 2005 at 16:44:48, Thomas Mayer wrote: >> >>>Maybe Yace can, Dieter is a clever >>>guy, I have not tested... :) >> >>Thanks, but Yace can't do it. I only use recognizers up to 5 men. > >Quark up to 6 men without pawns... but not all is finished yet, some quite >important once are still missing... but it grows -> at the moment I am debugging >the stuff, there were several +/- etc. mistakes, also it seems I had some >problems the nights I was programming that with the mirroring... this caused >also some misevaluations. Anyway, it looks quite stable now. (Some issues left) > >> I have coded a few others (KBP[and more Ps] vs K with all rook pawns, and >> KPPPP... vs K all rook pawns), but don't use it at the moment. > >They are part of my KP*K and KB*P* recognizers... this is quite simple and >almost cost zero. If all pawns are on a rook file and the most advanced pawn is >a draw in the bitbase then the hole position is draw... I wonder. Did you check the cases where it is a draw because the king captures the first pawn ? [D] K7/8/PB6/Pk6/8/8/8/8 b Tony >of course you could also >program that without bitbases with some rules, but I have my doubts that this >could be faster... > >> I cannot think of lots of configurations with >> more than 5 pieces, where one could code a recognizer. > >Well, I doubt that I will program 6men recognizers -> those ideas will be put >mainly in special evals -> why not use the bitbases in the eval if they are >there ?! > >> I thought about totally >> blocked positions like >> >> [D] K7/8/P2P2P1/P2P2P1/p2p2p1/8/8/k7 w >> >> but I have no efficient code for it. > >I think about that too in the moment, but before I get a headache I stop... :) >So far I am quite happy about the speedup I get and about some earlier found >solutions... I hope Quark will be near soon to Yace endgame strength... :) (As >usual, you must have a target when you work on something... is it reachable ?!:) > >Greets, Thomas
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