"raylopez99" wrote in message
ps.com...
On Apr 30, 2:44 pm, JohnnyT wrote:


I think this is important when looking at things like the computer
rankings so you can understand how measurably stronger than the field
Rybka is. And how far behind Crafty is is.

It is substantial, and gives tremendous credence to the argument that
the engine is substantially too weak to answer these questions in the
survey. Even if the questions are worth asking.

And I was just trying to add some anecdotal evidence that Fritz and
Rybka are often a 100cp apart in positions, and that value is not a
significant enough measure to say that Crafty is suitable. And that
indeed is even more weight that Crafty is unsuitable.- Hide quoted text -

- Show quoted text -

Once again you, and others like you, fail to understand what
normalization of results mean. You do not have to find the 'best'
chess program to rate human champions--as long as Crafty, a second or
third or fourth best chess playing program, or a not bad chess
program, scores everybody the same. That is normalization.

Perhaps you just don't understand what we are getting at...

In this study they crippled crafty down to 12 ply. Now What we
are trying to get at is that many (if not all of them)
of the world champions saw well
beyond 12 ply. Crafty would mark these moves as Errors, where
a stronger program would note that they were not. This is due to
the playing styles of each of the world champions. Tal and
Alekhine were calculating machines and would often complicate
a position... The crippled crafty would simply mark these as
errors.

It doesn't surprise me that Capablanca came out
as the best in this study because he would often gain a slight edge,
simplifying and using his fantastic endgame skills to win. Even
a crippled crafty would not mark these as errors.


A larger question looms from this thread: have you people not learned
anything after nearly a generation of computer chess? That the 'puter
is never wrong?

lol but different programs are definately wrong. I have used
several programs to examine my games from Chessmaster 10k,
Fritz 7, Fritz 8 and Rybka. Its amazing to see the difference
in what each program believes is 'right'. Guess which one
it closest to chosing the 'right' answer? I put my money on the
strongest program.