Author: Robert Hyatt
Date: 06:37:55 03/29/00
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On March 28, 2000 at 23:49:23, Kai Skibbe wrote: >>Look at the last PV. Bishop is getting taken on c7. Leaving a k+rookpawn vs >>king. > >Hi Bob, > >why don´t you have code for recognizing king and rookpawns against king ? When I >implement the wrong bishop in Gromit I realized that you have to implement it, >because otherwise you have no chance to check the other code with the wrong >bishop on board. > >Kai It actually does, after I looked at it. The problem was that I had some qualifiers that could be subtly defeated. I require that the lone king by at least on the same rank as the rook pawn, and within 1 file. In this case, 1 file wasn't enough as after the Bc7 check, KxB leaves the king two files away. Which still means the pawn can't possibly promote unless it is at a7. I fixed this one line and the problem went away although there is still an issue of an occasional fail-high but no PV when searching this to very deep levels...
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