Japanese Rules(Territory scoring)
5×5 to 9×9(Level 0)No komi, and your color is always black
9×9(Level 1) to 13×13,
15×15 to 19×19 Even Game
Komi is 6.5, and your color will be decided at random
15×15 to 19×19 Handicap GameNo komi
Flash Version for PC
Yeah... COSUMI has lost 33,690,185 games already...