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Subject: Re: Chess Assistant 6 / Tiger14 / Tablebases FAQ

Author: Victor Zakharov

Date: 01:42:20 04/04/01

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>Just like Bernd, I have to thank you for the support you offer to users! Anyway,
>I have set up the tablebases quite easily, but look at the following position
>and tell me if your Tiger 14 gets it right:
>
>kB6/2K5/8/8/b3N3/8/8/8 w - -
>
>The winning move is, naturally, Nd6!, with a quick mate, but Tiger 14, using its
>tablebases (!) comes up with Ng3??? (depth 98), evaluating the position as 0.00
>(draw).  What went wrong.  The position is from Convekta's great prog, Studies
>2.0 #160, I think.
>
>Best regards,
>
>*** Djordje

Tiger14 definetly selects the winning Nd6 move in any mode. Depth is displayed
wrong. This should be fixed. Anyway evaluation shows that there is mate in 3.

To clarify the situation try CA6 EndGameTB engine.

If CA EndGameTB engine gives the right move the situation should be considered
more carefuly. Exact sequence of actions is essential. I have no idea awhile.

If both engines produce wrong move something wrong with tablebases. The best way
is to check them with md5sum.exe program. Valid values for every file are
published on Bob Hyatt ftp.

Victor



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