|Formal division||Open division|
|time||43 minutes absolute||28 minutes absolute|
Formal division: four-round Swiss.
Open division: six-round Swiss.
The first round started at 16:00 UCT for the Formal and 16:10 for the Open division.
As usual, the tournament was held in two divisions, Formal and Open, with more restrictive entry conditions for the Formal division.
Formal Division 13×13
Open Division 9×9
The "real" names of the bots listed above, and of their programmers, are listed here: programs which have registered for KGS Computer Go Tournaments.
A newcomer to this event was dimwit, playing as DimWitBot. It is written by John Tromp and Álvaro Begué. Álvaro connects to KGS as alonamaloh.
ManyFaces1 did not appear on KGS in time for round 1. Its owner David Fotland was there, and was struggling to find why it would not connect. Its opponent CrazyStone eventually won on time.
In round 2 ManyFaces1 had managed to connect, but failed to play a move in its game with FirstGoBot. Eventually David found the problem. Its move-generating engine was putting comments into its gtp output (a gtp comment is a line starting with a #), and these were confusing the server. David removed the comment-generating code, and ManyFaces1 started to play, with most of its time already gone. It was still able to win.
Eventually CrazyStone was the undefeated winner (one of these wins being a time-out against ManyFaces1). Rémi Coulom's CrazyStone (and StoneCrazy, the same program playing in the Open division) uses an improvement to UCT, which Rémi has said he will publish at the Computer Olympiad in Amsterdam in mid-June.
When round 1 was about to start, ManyFaces2 had not been seen on the server, so I removed it from the draw leaving an even number of players. If I had realised that its owner was present and trying to mend it (it was suffering from the same problem as ManyFaces1, see above), I would have removed IdiotBot instead.
In round 2, IdiotBot and WeakBot50k played very fast, and their game was over before the first stone had been played in the MonteGNU/Orego2 game.
In round 5, StoneCrazy lost its only game, losing all its stones to MonteGNU. It did this because of a bug which causes it to believe that a group with a two-point eye in the corner of the board is safe. Rémi knows about this bug, and we can expect it to be fixed before CrazyStone/StoneCrazy competes again.
No player was undefeated. Three ended on five wins out of six, and using the SOS tie-break, they were placed in the order MoGoBot, MonteGNU, StoneCrazy.