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Subject: Re: 32Bit Winboard engines

Author: Luca Dormio

Date: 01:22:32 11/15/00

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On November 15, 2000 at 03:32:33, Francesco Di Tolla wrote:

>On November 15, 2000 at 01:31:47, Jouni Uski wrote:
>
>>You asked: which 32 winboard engines are Windows2000 / Chessbase combatible?!
>>I think answer is all of them.
>
>I don't know about ChessBase 8, but the winboard adapter by CB staff present in
>Fritz&friends is not compatible with all  of the winboard engines, but only with
>mmost of them. This is due to the fact they don't use the winboard standard to
>read the moves from the engine, but they kind of get the move from the lines the
>engine shows while thinking.

If you log the commands passed from the winboard adapter to the engine you find
that, for every move, they use a scheme like this:

new
force
e2e4
e7e5
[rest of move list]
go

they use this trick also to emulate pondering in engines that actually don't
support it, the CB/Fritz interface simply choose a candidate and send the same
sequence as above during opponent time, so the engine thinks that it's already
it's turn and starts the search; when the user moves the CB/Fritz interface
moves immediatly if the prediction was right...
My engine, for example, does not tollerate this behaviour very well, since it
starts to generate illegal moves near the end of a game (probably some
"result/mate" flag gets screwed up)

Regards
Luca



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