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Subject: Rybka search directions in tests

Author: Gabor Szots

Date: 23:30:52 12/06/05


The following comparison table has been obtained using a P4 3GHz machine, 128 MB
hash and 10 seconds per position.

                        very pos.    slightly pos.    slightly tact.    very
tact.

Arasan5 (141 positions)    97            97                 94             98

ECM-GCP (183 pos.)        133           138                139            141

IQ5 (141 pos.)            158           164                164            168


Differences, as expected, are minor. It seems very tactical is best but please
note that 10 sec/pos is rather fast and it is possible that the positional
directions are better at longer time controls. Also, these test suites are
primarily tactical, so they may bias the overall picture.

Gábor




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