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Subject: 5 piece tablebase would save the day

Author: Dann Corbit

Date: 19:41:40 06/15/99

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On June 15, 1999 at 15:38:32, Howard Exner wrote:

>On June 14, 1999 at 17:19:54, James Robertson wrote:
>
>>On June 14, 1999 at 16:27:05, Howard Exner wrote:
>>
>>>8/8/4kb2/2R5/4KP2/8/8/8 w - - id Mini - Now; am f4f5; bm Rb6+
>>>
>>>Here's a test for programs. Mini played f5 and found that it
>>>could not penetrate with its king. Rb6+ should win as the king
>>>can use the f5 square to approach.
>>
>>Rb6+ isn't legal; perhaps you mean Rc6+? My program switches from Rc7 to Rc6+ at
>>ply 3 and never switches.
>>
>>Is this actually a position from the game? It seems impossible that Mini could
>>not win this position....
>>
>>James
>
>8/8/4kb2/2R5/4KP2/8/8/8 w - - id Mini - Now; am f4f5; bm Rc6+
>
>Thanks James, I corrected the bm as Rc6+. This is the actual
>position from the game. Programs might advance the pawn as their code
>may give bonuses to pawns as they are marched forward, yet here
>once the pawn grabs the f5 square it looks like a draw. Positioning the
>king closer to the queening square should be given the bigger bonus.

A krpkb tablebase would give the mate instantly.
Sometimes people wonder if they are worth while.
Let's call this a "case in point."




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