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Subject: Zarkov puzzler -- how does your engine do on this one?

Author: Dann Corbit

Date: 21:12:56 10/08/99


r2r2k1/pQBb3p/6p1/3Pb2q/8/4pPP1/PP4BP/R2R3K w - -

Zarkov 4.0 32 bit was stuck on Bxd8 for about 2200 seconds {around 62 million
nodes}, then made this choice:
22.Bxe5 Qxe5 23.f4 Qb8 24.Qb3 Qxb3 25.axb3 e2 26.Rd2 Bb5 27.Bf3 Re8 28.Re1
Rad8 29.Bxe2 Bxe2 30.Rdxe2 Rxe2 31.Rxe2 Rxd5
with an eval of about +2.00.

About 10 minutes into the analysis, it could see that Bxd8 was bad
(eval -0.23) but it took a very long time to find a suitable alternative.

Crafty seems to avoid Bxd8 right away.  How do other engines do?  Perhaps it is
some sort of a bug.

Also, I only seem to get about 28KNPS for Zarkov 32 bit.  Is it a slow searcher,
or do I have my machine configured improperly? (It's only a 300MHz PII on the
machine w/ Zarkov 4).



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