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Subject: Re: When the "extensions" were used in PC game for the first time?

Author: Tom Kerrigan

Date: 20:00:55 12/27/99

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On December 27, 1999 at 21:43:54, leonid wrote:

>Hello!
>
>When the extensions were used in  PC chess games for the first time?
>
>If you could indicate me some very strong and recent chess game that did not
>used the "extensions", it could be real help. I tryed for a long time to figure
>out what the raw speed of my logic is but "extensions" kept me in the dark.
>Maybe I even have those useful "oldies" that can solve my mystery. Just name
>them!
>
>Thanks,
>Leonid.

The check extension has been used since the beginning of time.
-Tom



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