Ukimix: Ah, there seems to be a problem:

"Object of the game is to mate the opponents king. Stalemate is a draw. Also, when a player has no rook, bishop, or knight anymore, the other player must mate him within a certain number of moves, depending on how many `big' pieces the player has, otherwise the game is declared a draw. The precise numbers are omitted here (also, my sources on this seem to contradict - is there a native player of this game who can provide full information on this topic?). "

The rules at Chessvariants are not certain about this subject. Would you have any other source of reliable information?