Author: Kirill Kryukov
Date: 05:10:37 12/07/05
Hi all, I'm happy to announce the update of CEGT 40/40 lists and statistics. We have now more than 540 games of Rybka 1.0 Beta 32-bit, and also 104 games of 64-bit version. 32-bit Rybka is now prowdly leading our main rating list. Rating of 32-bit version is not that incredible as it was expected, but still good enough to secure the 1-st place, for now. 64-bit version is probably stronger. We are continuing testing both versions, so there will be more certain answers soon. Toga II 1.1 rating now stabilized, after 1000 games. We can probably say now that it did not catch Fruit 2.2.1. Main rating list (best versions with 300 games): http://kd.lab.nig.ac.jp/chess/cegt/rating-table-shifted.shtml Rating list for all versions: http://kd.lab.nig.ac.jp/chess/cegt/rating-table-all-shifted-hidden.shtml CEGT 40/40 downloads and statistics: http://kd.lab.nig.ac.jp/chess/cegt/ Previous version of the ratings and statistics, for reference: http://kd.lab.nig.ac.jp/chess/cegt.0/ Some of my observations about Rybka: 1. Rybka is not afraid of doubled pawns. Shredder loves making double pawns to the opponent, it is very happy to do this. Rybka does not worry to have double or triple pawns, and with incredible coordination of pieces those doubled pawns become a fortress. 2. Rybka can organize a bishop and pawns into fortress. I've seen it already in several games for now - Rybka builds up a total fortress structure of pawns with bishop in the middle, somewhere near the center, paralizing the opponent pieces. This is sometimes funny to see. Shredder does not know what to do. 3. Rybka hesistates to checkmate. It does not like to checkmate. When it has enough advantage to go for mate, it keeps doing other things! It eats up opponent's pawns, it promotes its own pawns, and finally checkmates when it has nothing more to do... This is real funny, I observed it a few times now too. In one game Rybka took 25 moves to checkmate a king with two pawns with two queens, it first picked those two pawns, then played with that king a little more and finally it got tired and checkmated.. Vas was right to be ashamed of Rybka's endgame, there are things to fix there still. Rybka's games are fun to see, because they are not just crazy calculation, but some understanding is involved too. It really feels more "human" than any other engine I've seen. Best, Kirill
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