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Subject: Re: test positions for programs

Author: Hans van der Zijden

Date: 05:17:25 07/08/02

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Djaja
[D]6R1/P2k4/r7/5N1P/r7/p7/7K/8 w - - bm Nh6

This is one of my favorites. White to play and draw. I don't think programs will
solve this one within reasonable time in the next few years. It takes a lot of
moves to see the perpetual check on the g-file.

K.K.Behting
[D]8/8/7p/3KNN1k/2p4p/8/3P2p1/8 w - - bm Kc6

Kc6 is the only move that draws. Thought to be unsolvable for computers but
Patzer by Roland Pfister solved it about a year ago. After 16 ply in 0:06:49
Patzer finds Kc6 with score -0.04 (Computerschaak 2001 vol.6). Computers will
hold a draw if you give them the first move.

Hans.



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