Author: KarinsDad
Date: 19:29:16 09/20/99
Go up one level in this thread
On September 20, 1999 at 18:36:42, Howard Exner wrote: >On September 20, 1999 at 14:42:27, Robert Hyatt wrote: > >> >>Here are a couple of examples: >> >> +---+---+---+---+---+---+---+---+ >> 8 | | | | | | | *K| | >> +---+---+---+---+---+---+---+---+ >> 7 | *P| *P| | | | *P| *P| *P| >> +---+---+---+---+---+---+---+---+ >> 6 | | | | | | | | | >> +---+---+---+---+---+---+---+---+ >> 5 | | | | | | | | | >> +---+---+---+---+---+---+---+---+ >> 4 | | | | | | | | | >> +---+---+---+---+---+---+---+---+ >> 3 | | | | | | | P | | >> +---+---+---+---+---+---+---+---+ >> 2 | P | P | P | | | | P | | >> +---+---+---+---+---+---+---+---+ >> 1 | | | | | | | K | | >> +---+---+---+---+---+---+---+---+ >> a b c d e f g h >> >> >>(fen 6k1/pp3ppp/8/8/8/6P1/PPP3P1/6K1/ w) >> >>old (16.18 crafty) evaluates this as -36 (black is better) because of >>those two doubled kingside pawns. new crafty says +.36 because white has >>a potential outside passer on the c file, black can't force a passer without >>the king helping. Better... > >Black can force a passer here without the king's help. > >Try the below artificial (and illegal) example on crafty. It will test >whether black can force a passer without the king's help. It has that same pawn >configuration on the king's side. > >1kb5/1p1p1ppp/1P1P4/8/8/1p1p2P1/1P1P2P1/K1B5 w Yes, black can get a passer. But cannot white also get a passer if black tries? Hence, the kingside is effectively even (not taking into account how far advanced the pawns are). KarinsDad :)
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