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Subject: Re: Endgame tables for Tiger.

Author: Lex Loep

Date: 06:25:56 11/22/00

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On November 22, 2000 at 09:21:27, Mogens Larsen wrote:

>On November 22, 2000 at 09:01:14, Jeroen van Dorp wrote:
>
>>from the help file:
>>
>>"Using the end game database
>>
>>In order to use the (Ken Thompson) databases you’ll need to turn on this feature
>>through the Chess brain options. Additionally you will need to define the
>>drive(s) and path(s) where the databases can be found using the Configuration
>>utility provided with Rebel Tiger.
>>Note that Rebel Tiger may be delivered with (1 to 4) or without End Game
>>CD-ROM’s depending on your supplier and price! The Internet distribution does
>>NOT come with the CR-ROM’s
>>
>>Place the CD-ROM in the CD player. In case you have multiple CD-players you may
>>use multiple end game CD’s simultaneously. When you have a CD-ROM Jukebox do NOT
>>use multiple End Game CD’s, the swapping of discs takes too long for correct
>>functioning. Further action on your behalf is not required, except moving the
>>game to a 5-piece position of course...
>>From that moment on, when Rebel Tiger is turn, the position is checked to be
>>present in one of the databases. If so, you are prompted to put the appropriate
>>CD into the drive if not already present. Next the database is queries for the
>>best move. During the search you may be asked to put in another end game volume
>>since the position may convert into a different game.
>>When the position is present in the database, the Statistics window will show
>>it. It will occur that multiple best moves exist for a certain position. Using
>>the Next Best feature you can evaluate these paths. The Statistics window
>>indicates the presence of next best moves where variant moves are between
>>brackets.
>>Since the database is constructed to seek for the shortest distance to
>>conversion in the first place and mate in the second, it may occur that mate can
>>be reached sooner than the database will show! End games where a pawn (7th row
>>e.g.) has an important role are good examples.
>>You can use the end game databases for study or try to beat Rebel Tiger!?
>>
>>Copyright 1998-2000, Lokasoft"
>
>It sounds like an old helpfile referring to the previous Rebel Tiger package and
>not the new one. If I were to venture a guess then it would be that the old
>Lokasoft engine was capable of using Ken Thompson endgame tables. There's no
>mention of tablebase support at the Rebel site as far as I can tell, nor do they
>offer the old tablebase format for sale.
>
>The programmer has mentioned the lack of tablebase support of Tiger and Gambit,
>and has taken flack for it. So with the exception of the three piece tables
>mentioned by George, I doubt it can use Thompson tables. But maybe the author
>can explain (?),
>
>Mogens.

The support for the Thompson tables is still in the Lokasoft engine.

Lex




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