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Subject: WAC #2

Author: Andrew Wagner

Date: 20:04:24 04/30/04


Here's the position:

[d] 8/7p/5k2/5p2/p1p2P2/Pr1pPK2/1P1R3P/8 b - -

The move to find here is Rxb2. My question is...what ply does your program find
the solution on? To tactically work it out to see that you can force queening
requires something like 13 or 14 ply. This is an interesting knowledge vs.
search position...can you special-case this somehow to find it sooner? The
problem is, as an FM friend of mine pointed out, if the king were just a bit
closer, the sac is losing. E.g. In this position:

[d] 8/7p/5k2/5p2/p1p2P2/Pr1p1K2/1P1R3P/8 b - - (white pawn missing on e3)
...the sac would be losing because the king is close enough to stop the pawns.
So my first inclination to somehow make the static eval see that the pawns were
worth being down a pawn seems to be bad. Any thoughts?



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