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Old May 14th 07, 12:27 PM posted to rec.games.chess.computer
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Default Engine Matches with Assymetric Time Allocation

Arising out of the early thread about engine rating of top players it
occurred to me that part of the problem is that we normally rate
engines by how welll they do at a particular rate of match play 40
moves/40 mins or blitz 5' etc.

But for the purposes of determining an accurate parity of engines it
would sometime be useful to run an engine engine match with a variable
time allocation so that the weaker engine is allowed to think a lot
longer. The aim being ultimately to find how big a time penalty you
have to give say Crafty-12ply to get parity with Shredder10. That way
you could have more even matches and see more clearly how their play
differs at a qualitative level.

This would mean that permanent brain would have to be disabled to
prevent the strong engine from thinking on the weaker engines much
longer time allocation. But this would provide a way to measure in a
reasonably quantitative way how much enginer rating improves with
additional search ply or time.

A rough starting point for a Blitz match with Crafty at around 12 ply
range is Blitz 4'+2"
Crafty Time increase 200% and permanent brain off.

AFAICT it isn't possible to run an engine match with one engine at
fixed ply and the other at fixed time.

Regards,
Martin Brown

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