Author: Roman Hartmann
Date: 13:30:09 03/02/06
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On March 02, 2006 at 00:26:08, Charles Roberson wrote: > > Came across this position by accident browsing chess club web sites. > It comes from the Duke University Chess Club. The position is > 1r5k/4NP1b/7K/8/6R1/8/8/8 w - - 0 1 > > Telepath found the mate in 4 but could not find the mate in 3. > After some debugging I found out why!!! > > Just before the final ply in the mate in 3, Telepath announced insufficent > material which is true. But in this position you can mate with insufficient > material. > > It put such a smile on my face, I had to share it. > > Maybe some of you have the same logic flaw in your code. Sometimes it helps to have no 'clever' eval. New game 1r5k/4NP1b/7K/8/6R1/8/8/8 w - - 0 1 Analysis by Roce 0.03453: 1.Ne7-g6+ Bh7xg6 2.Kh6xg6 ± (1.17) Depth: 2/5 00:00:00 1.Rg4-g8+ Rb8xg8 2.f7xg8Q+ Bh7xg8 3.Ne7-g6# +- (#3) Depth: 3/6 00:00:00 1.Rg4-g8+ Rb8xg8 2.f7xg8R+ Bh7xg8 3.Ne7-g6# +- (#3) Depth: 4/8 00:00:00 1.Rg4-g8+ Rb8xg8 2.f7xg8R+ Bh7xg8 3.Ne7-g6# +- (#3) Depth: 5/10 00:00:00 Roman
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