Author: Ralph Stoesser
Date: 12:12:08 07/09/03
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On July 09, 2003 at 13:18:41, Jarkko Pesonen wrote: >Can anyone say how easy it is to change crafty's search code (search(r).c ) >so that searches brute force all the moves in the first 4 plys and the continues >as usual. > >Thanks in advance >Jarkko Should be easy. Disable the null move part for ply < 5 in the Search() function in file search.c. orig from Search(...): if (do_null && !tree->in_check[ply] && pieces && (pieces>5 || depth<7*INCPLY)) Change it to: if (do_null && !tree->in_check[ply] && pieces && (pieces>5 || depth<7*INCPLY) & ply<5) Be sure to not use futility cutoffs on Crafty build. I think, that's all (searchr.c shouldn't need changes, since there is no null move for ply 1). No warranty, I'm a newbie Crafty fan :) -Ralph
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