How should the new engine parameters be used?
“Contempt” should be set to a positive value to instruct Rybka to avoid draws by repetition, and to a negative value to seek them. It is specified in units of centipawns. “Server Buffer” should be checked when playing on the PlayChess server, which has a bug which causes the engine to be sent slightly inaccurate time information and can cause time losses in really long games. Rybka uses this option to make a small adjustment to her time allocation algorithms. As far as I know, it is not necessary to check this option when playing on other servers.
