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Subject: Re: Pawn Majorities : some working examples...

Author: Howard Exner

Date: 15:36:42 09/20/99

Go up one level in this thread


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




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