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Subject: Re: Computer Chess and Positional Judgement, IE Reduce and Simplify.

Author: Pat King

Date: 10:36:32 01/06/03

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On January 06, 2003 at 03:20:32, Terry McCracken wrote:

>This position arose in a casual game tonight. I played the "Human" Rd7+ to
>quickly reduce it to a simple winning King & Pawn Ending.
>
>Computers like to keep it more complex with Rf6!?
I think, rather, they are keeping it simple, holding onto an extra pawn.
>
>How long will it take, if ever, for a top programme to find and play the "Human"
>Rd7+, winning with simplicity?

An advantage of a single pawn is not all that simple. Simple rules I have
considered using in my program don't encourage exchanges until there's an
advantage of 3 pawns. This type of position takes raw depth for the computer to
understand, at least until a few more men are gone, and we're down to EGTBs.
>
>How much effort is put foward by the programmers, to tell the computer,
>"Reduce & Simplify"?

I think, not much. Rf6 is not losing, just longer. I don't think many
programmers are devoting a lot of time to winning positions.

>
>[D]8/p1r1k2p/2PR2p1/6P1/8/8/P4P1P/6K1 w
>
>
>Terry

Pat (mediocre player, mediocre programmer, but stubborn)




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