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Subject: Re: CM9K Personalities - How Accurate Are Their Ratings?

Author: Ralph Patriquin

Date: 11:23:24 02/06/03

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On February 06, 2003 at 07:52:34, Harpo wrote:

>After a 15 year hiatus, I'm planning to return to tournament play. In
>preparation, I've been playing 30/75 SD60 games against a handful of CM9K's
>personalities. I recall reading somewhere that these were guaged with USCF-rated
>players, but I would appreciate any opinions from OTB players as to how accurate
>these ratings "feel." I'm only curious about the personalities rated from
>2100-2500.
>
>Thanks in advance.

Harpo,

As John Merlino mentioned, some of the personalities exhibit rather bizarre
playing styles that cause them to make moves that in my opinion even a
relatively weak human player would not . I think you might find it will hurt
your play by training with them.

I prefer to use the Chessmaster and other Grandmaster personalities but simply
weaken them by adjusting their Strength of Play setting. You might want to start
out at 50% and adjust from there in 10% increments up or down until you get a
challenging game.

In this way you get a more balanced game with different playing styles, but
without the crazy play exhibited by some of the other personalities. You will
also play against better and varied opening books. The only downside is you
won't know the true rating of these opponents. Maybe John can explain how
Strength of Play works and a possible rating estimate from it, as I have no idea
as to its internal workings.

Ralph



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