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Old February 20th 04, 07:43 AM
Mikko Nummelin
 
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Default Endgame...

On Fri, 20 Feb 2004, Chaos wrote:

the following position (FEN):

8/8/6p1/7k/7P/8/K7/2r5 b - - 0 76

Black (Junior 7) to move. Engine tournament, this game was Ruffian 1.0.1
v Junior 7. Nalimov table bases installed and used. ("Endgames with 5 or
less pieces will be played perfectly.")
It is obvious that 1...Kxh4 and mate soon (~ 10), no need to calculate
this out. But...Junior 7 insisted on giving away it's rook before
queening its pawn and mate in 30 + moves.

Any comments as to why?


Missing or corrupt krpkp and krpk -tablebases, or access failure to them
due to some bug, but kpkp still OK, however? In that case a computer will
'hit' the forced mate in kpkp sooner than the forced mate on other lines
with 'brute force'.


Mikko Nummelin
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