today we've launched the 4-player version of the game. the board is the same size, but the position is randomized instead of fixed. the new SDK allows testing of 4-player games.
you must submit your bot separately to the 4-player version, since the strategies can be quite different. ratings and points will be calculated separately. for the rating adjustments here, an ELO evaluation is run against every pair of bots in the match -- the ones who finish above you count as a win, below you count as a loss.
adum