Thanks to Doug, it answers Antoine's question, and it swhows that my initial interpretation was not wrong as I though: 'My interpretation of the 'two moves per turn' is simple: after you move the first move of your turn, the other player is forced to 'pass', as a permissed (and obligatory) 'move' in this game, and after completing the turn with your second move, the two-moves turn is available for the other player.'