Fencer: Why it's a bug? Because according to the rules of the game state that "100 squares are assigned, in a randomly fashion", having 6 games end up exact copies of themselves is statistically improbable. Hence the bug where only one game is randomly generated and copied 6 times.
(hide) If you want to play a game with an opponent of a similar level, you can define a required BKR range for a new game invitation. Then nobody with a BKR outside this range will be able to see/accept it. (Katechka) (show all tips)