Author: Robert Hyatt
Date: 13:57:28 02/24/99
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On February 24, 1999 at 15:29:13, Bruce Moreland wrote: >Qg4 and Qg6 are both mate in 39, I contend, so I would give neither an >exclamation point. > >And Qd3+ is mate in 51. > >bruce This is a simple bug introduced in 16.5 that I just found. Normally it has no serious effect, but in the above case, it did. It is caused by the fix I added to solve another problem, so that I don't probe the egtb's until I get beyond ply=2. Unfortunately, after finding the first mate you saw, the null-move at ply=2 prevents any further probing. Normally null-move doesn't affect these since there are no queens on the board. But in this case, with a queen on, null-move is tried and it hides the 'other mates'. Will be fixed in 16.6
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