Author: martin fierz
Date: 06:32:08 02/24/04
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On February 23, 2004 at 23:05:58, Robert Hyatt wrote: >On February 23, 2004 at 18:52:36, Geoff Westwood wrote: > >>Hi >> >>I was perusing the latest table of results, Crafty's static eval of 2 of the >>passed pawn positions were interesting. >> >>Assuming I havent made a mistake in the cutting and pasting >> >>Position 1 >>8/4k3/8/7P/1P6/3p4/4p3/4K3 b - -; id "PP-00004" >> >>[D]8/4k3/8/7P/1P6/3p4/4p3/4K3 b - - >> >>Crafty reckons this is +4.8 (good for white). This is rather clever as although >>the black king could catch either of the white passed pawns, it cannot stop >>both. Also blacks 2 advanced pawns cant do anything as the white king gobbles >>them up easily. Only Crafty and Tinker understand this position statically. Any >>tips on what the algorithm is to sort this one out ? > > >This is the idea I have reported here before, pointed out (demanded to be fixed >in fact) by a GM friend of mine. The idea is that the two separated pawns are >better than the two connected passers. The king stops the two connected passers >easily until the enemy king supports them, meanwhile the split passers walk on >in... i don't like the generality of your statemtent here, but - it is a small price to pay if it's right in most cases. which perhaps is the case. anyway, here's my question: what does your static eval say for the black king on e6/e5/e4/e3 ? i wouldn't be surprised if it got it wrong in some cases now... cheers martin
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