Author: Scott Gasch
Date: 14:08:40 10/27/99
Go up one level in this thread
[...]
>int simplePP[8] = { 999, 55, 33, 23, 16, 12, 0, 0 };
[...]
This is interesting... a pawn on the seventh for cyclone is 255 (+2.55) while on
the 6th rank is 128. It also gets a passed pawn bonus of 30 unless it is
blocked in which case it is 15. King support is 20. Connected passed pawns get
+3 each additional.
The reason that I used 255 as the 7th rank static bonus is because the engine
was so cavalier about playing passed pawns until I upped this drastically. A
good percentage of its losses were due to ignoring a passer and doing other
stuff until it got to the 6th or 7th rank. It was not until then that the
program realized it was in trouble.
I justify the 255 score because even an unpromotable but sustainable passed on
the seventh is tying up at least one minor piece. This is often a winning
advantage for the side with the pawn threat.
Comments?
Scott
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