Author: Peter McKenzie
Date: 14:18:29 12/02/03
Go up one level in this thread
On December 01, 2003 at 08:55:45, scott farrell wrote: >On December 01, 2003 at 00:36:11, Peter McKenzie wrote: > >>On November 30, 2003 at 17:18:19, Georg v. Zimmermann wrote: >> >>>[b]8/8/8/8/3R1p1k/8/4P3/6K1 w - - 0 1 >>> >>>white moves pawn, black can not capture en passant. wonderfull, breaks my new >>>move generator. >>> >>>Uri, I think you are the expert on this. Ideas for workarounds ? :-) >>> >>>But the main reason I am posting is: are there any other situations like the >>>above where I can with one move move 2 pieces out of the way of an x-ray attack >>>? >>> >>>Georg >> >>I didn't bother to try fixing your diagram but I think I can guess what you're >>talking about. In which case you might be interested in this link (look at the >>last position) to help you test whatever fix you make: >> >>http://homepages.caverock.net.nz/~peter/perft.htm >> >Peter, >I think your perft calcs for that position is out. which position? > >That complicated position: >r1b1k2r/pp2bppp/5n2/3q4/8/3BPQ2/PBP2PPP/RN2K2R/ b KQkq - 0 0 this position isn't on my page is it? > >I verified these against crafty 19.3 > >plies perft >1 50 >2 2159 >3 99925 >4 4128960 (crafty), chompster(4128961) - the difference is probably draws >5 ... too slow > >Scott > >>cheers, >>Peter
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