Author: Albert Silver
Date: 14:10:12 12/17/99
I seem to have run across a bizarre problem and wonder if this might not be a
bug in Fritz (5 or 6) or one of the infamous null-move problems. I was analyzing
the following position which was part of some analysis done on
Yakovich-Stefanova, Sevilla op, 1999:
r4rk1/p3bppp/nn6/1N6/Ppp1P3/1P2BP2/N3K1PP/R2R4 w - - 0 18
In this position the indicated move is 18.Nxa7! Fritz never finds this (at least
up to 14 plies) and I decided to check the lines which follow: 18...cxb3 and
here again, Fritz sees nothing for White and the eval drops with each ply; yet
as soon as I feed it the next move 19.Bxb6 its eval shoots up in White's favour.
What gives?
Albert Silver
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