Author: Christophe Theron
Date: 23:44:38 12/15/98
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On December 15, 1998 at 23:41:50, Kevin Mulloy wrote:
>Gentlemen,
> I am in the process of testing MPC7 in a 200 MMX 80 meg RAM machine against
>MCP7 in a 450PII 256 meg RAM machine. In the 200, the MCP7 engine calculates
>aprox 1,250,000 positions per minute. In the 450, about 2,600,000 positions per
>min (slightly more than double). I have adjusted the times accordingly -- I
>give the 200 2 min per move and the 450 1 min per move. I thought that this
>should be a fairly even match with a slight edge to the 450. After 20 games,
>the 200 leads 15-5?? I was not testing this fine program against itself to try
>to produce a "winning" machine. I just wanted an easy way to handicap one
>machine so that the 200 and the 450 would play fairly even chess when I matched
>different programs against Mcp7. I realize that I have a very small sample here
>-- could someone advise me on the proper set up that I should be looking for to
>even these 2 machines out. Also, If my approach to this problem is OK, how much
>bigger should the sample be to give a good indication of strength? Thank you,
>Kevin Mulloy
My opinion is that you should not use an average time per move, but use a given
time for the whole game, or classical time controls (A moves in B minutes, then
C moves in D minutes, and so on).
Depending on the program, average time per move is sometimes completely erratic.
Maybe it is the case with MChess?
Also, if you want such a match to be fair, you have to disable thinking on
opponents time. The trouble here is that not doing so should have given an
advantage to the fastest computer, so really I cannot explain your result.
Strange...
Christophe
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