Author: Andrew Dados
Date: 23:00:43 12/11/01
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On December 11, 2001 at 20:47:13, Will Singleton wrote: >On December 11, 2001 at 16:54:50, Will Singleton wrote: > >>On December 11, 2001 at 14:13:10, Andrew Dados wrote: >> >>>On December 11, 2001 at 10:59:55, Will Singleton wrote: >>> >>>>[D]4k2r/1nrqbppp/p3b3/1pppP1NQ/8/1NP1B2P/PP3PP1/R4RK1 w k - 0 1 >>>> >>>>Most programs don't immediately see that Nxh7 puts the knight in a bad spot. >>>>Can this problem be addressed by root analysis? >>>> >>>>(Beowulf might be doing something like that, since it never considers Nxh7.) >>>> >>>>Will >>> >>>consider this: >>> >>>[D]8/6pN/5p2/8/8/8/8/8 w - - >>> >>>The only square N can escape through is c8... >>>So you may treat N on a/h 7th rank as vulnerable as bishop and just set your >>>squaretable value for N to - 1 pawn there (or more). If search can see N will >>>leave h7 safely - you are pawn up; if it stays there - it is probably in >>>trouble. >>> >>>-Andrew- >> >>I do something similar for B & N, but only for the root move. Perhaps your >>method is simpler and better. >> >>Will > >I tried your approach, it didn't work. Somehow the pv has the knight moving off >the square, but I didn't really analyze it. Seems like it should work, but it >didn't for me. > >How does your prog handle the position? (Assuming your approach is implemented.) > >Will I lost some files in HD crash, so my proggy is currently not functional. But it was doing ok in similar tests. When I get it back to work I will test that one. -Andrew-
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