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Subject: Re: first possible example of a Blunder by Kramnik

Author: Robert Hyatt

Date: 08:22:48 10/25/02

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On October 25, 2002 at 00:40:04, Peter Kappler wrote:

>
>I think that the 1.5 pawn threshold you guys have chosen is going to generate a
>lot of false positives:

No doubt.  The point however, is to just screen the games looking for what
appear
to be simple-to-see (shallow depth at 1 sec per move) blunders.  They _clearly_
have to
be re-checked because many of them are not blunders at deeper depths...

>
> - sacrifices that Crafty (or any computer) can't understand
> - Kramnik choosing to win a rook instead of mating in 9
> - sacrifices that probably aren't completely sound, but
>   are perfectly reasonable in human vs human play
>
>If you're looking for blunders on the same level as Qc4, you should use at least
>a 2.5 pawn threshold, but I'll be shocked if you find anything.  Kramnik's games
>are scrutinized by players all over the world.  If he had made a blunder of that
>magnitude (missing a 1-ply tactic when not in time trouble) it would have
>already been published.
>
>Qc4?? is a once in a lifetime blunder for a 2800 player.
>
>-Peter



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