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Subject: Re: A test position(perpetual check), cm8000 does NOT have problems

Author: John Merlino

Date: 12:49:19 10/23/00

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On October 21, 2000 at 05:28:14, Uri Blass wrote:

>I composed this position to see if chessmaster can see perpetual check.
>
>[D]4k3/6RQ/6PP/8/r7/8/r7/7K b - - 0 1
>
>The target is to see 0.00 score
>
>I found that chessmaster does not see the draw even after some minutes but after
>Ra1+ Kg2 it can see the draw very quickly in clearly smaller depth.
>
>The same after Ra1+ Kh2
>
>I tried also Fritz5.32 and it does not see the draw at least after a short time.
>
>If I give Fritz5.32 the moves  Ra1+ Kg2 it can see the draw but after Ra1+ Kh2
>it has problems to see the draw.
>
>Fritz5.32 expects Kg2 when it plays Ra1+ and wants to play Kg2 at depth 13 with
>evaluation 0.00.
>
>How many squares can the white king visit before the repetition?(it is clear
>that the white king cannot visit all the 21 squares (b1-b3... h1-h3))
>
>Uri

Chessmaster 8000 (the final version, which I am thrilled to have), finds Ra1+,
with a score of 0.00 in 14 seconds at depth 9 on my P3-600.

jm




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