Computer Chess Club Archives




Subject: Re: The Crafty variation of the Ruy Lopez

Author: Djordje Vidanovic

Date: 12:14:15 08/12/00

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On August 12, 2000 at 13:22:04, Alexander Kure wrote:

>On August 12, 2000 at 12:42:13, Peter Hegger wrote:
>>A friend of mine and I were discussing chess openings the other day and the
>>subject got around to chess programs and their contribution to opening theory.
>>He mentioned an opening in the Ruy Lopez that was supposedly named after the
>>program Crafty.
>>Has anyone else ever heard of this opening? If so does anyone know the move
>>Thanks in advance for your help.
>What i know is the following:
>After 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 there is the move 4. Bc4. I don't know if
>this was a contribution by crafty, but i suppose that when after 3...a6 a chess
>program is out of book it has a good chance to follow up with 4. Bc4 if it loves
>the bishop pair more than structural weaknesses of the pawn structure.
>In fact the same position with colors reversed arises after 1. e4 e5 2. Nc3 Nf6
>3. a3 Bc5 which is well know theory. So 4. Bc4 just transposes.


I think that 4.Bc4 was Crafty's line for the WMCCC in Jakarta, 1996.  Crafty
surprised some programs with this sound but rare move and took them right out of

***  Djordje

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