Talk:Zappa (chess)

old talk

In the WCCC Zappa drew only to Futé, who finished the entiere tournament with 1/2 points, just the draw against Zappa, the winner ! Strange.

Rybka?

Is Zappa stronger than Rybka?

Rybka has higher ratings, I believe, but Zappa just beat it 5.5 to 4.5 in a match. Bubba73 (talk), 02:34, 29 September 2007 (UTC)

Meanwhile, Version 3 of Rybka has been released. The following is a custom selection of various Rybka and Zappa ratings, from CCRL:

http://computerchess.org.uk/ccrl/4040/cgi/compare_engines.cgi?class=None&num_best_in_class=1&family=Rybka&family=Zappa&print=Rating+list&profile_step=50&profile_numbers=1&table_size=100&ct_from_elo=0&ct_to_elo=10000&match_length=30&cross_tables_for_best_versions_only=1&sort_tables=by+rating&diag=0&reference_list=None&recalibrate=no

(sorry for the URL monster; tinyurl don't work here)

There, the Rybka 3 single(!) 64 bit version is rated 3157, and the highest rated Zappa engine, Mexico II 64 bit 4 CPU is rated 3075, with error margins smaller than +/- 20 each. Nevertheless, currently, we can find this last Zappa version on the 4th rank in quad-cpu ratings, still.

CCRL CEGT --80.121.69.145 (talk) 05:26, 7 January 2009 (UTC)

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