Sumerian: Because there are really only 480 different positions. Each of the 960 positions can be paired with its mirror image. So the 960 positions is really 480 pairs.
(sakla) If you want to find an opponent with similar playing skills to your own look in the Ratings page of the type of game you want and find a player with a similar BKR. (pauloaguia) (Bütün ipuçlarını göster)