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Subject: an idea to evaluate rating of programs based on pgn file of their games

Author: Uri Blass

Date: 05:54:51 08/09/01


My idea is the following idea

1)download a pgn of  6 games of a program at 2 hours/40 moves(for example some
of the ssdf games of Deep Fritz)

2)choose a program that you want to use to evaluate the rating of chess
programs(I am going to call it program X)
Here is the explanation how to use it to evaluate the rating of deep fritz.

3)give X to calculate for 1 hour every position when Deep Fritz had to move
4)build a table with 2 column when the first column is the time in seconds and
the second column is the number of solutions(number of positions when X suggest
the same move as Deep Fritz)

It should be something like the following:
time           number of solutions
0-1 second           347 solutions
1-2 seconds          372 solutions
2-3 seconds          374 solutions
...
60-61 seconds        431 solutions
...
500-501 seconds      440 solutions
...
3599-3600 seconds    411 solutions

if 500-501 seconds give the biggest number of solutions than it seems that
500-501 seconds of X is eqvivalent to tournament time control of Deep Fritz.

It is possible to translate 500-501 seconds to a rating number and find rating
for Deep Fritz(Athlon1200)
Bigger numbers are better and it is possible to assume difference of 70 elo if
the number is twice bigger.

It is also possible to use X's searches to evaluate rating of other programs
including X vy the same way

I have some interesting questions:

1)Do you expect the rating list based on this test and not based on results to
be biased for X or against X?

2)What is the estimated rating of programs including Deeper blue, Deep blue,Cray
blitz,Deep thought based on this experiment?

3)What is the estimated error that you expect to get in evaluating the rating of
programs by this way.



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