in a defender and then pass out to a perimeter player for a shot ("kick out"). Another, albeit less common offense, is the "motion c", sometimes nicknamed "washing machine offence", in which two "weak-side" (to the right of the goal for right-handed players) perimeter players set up as a wing and a flat. The remaining four players swim in square pattern in which a player swims from the point to the hole and then out to the strong side wing. The wing moves to the flat and the flat to the point. The weak side wing and flat then control the tempo of play and try to make passes into the player driving towards the centre forward who can then either shoot or pass. This form of offence is used when no dominate hole set is available, or the hole defence is too strong. It is also seen much more often in women's water polo where teams may lack a player of sufficient size or strength to set up in the centre forward. The best advantage to this system is it makes man-coverage much more difficult for the defender and allows the offence to control the game tempo better once the players are "set up". The main drawback is this constant motion can be very tiring as well as somewhat predictable as to where the next pass is going to go. Advancing the ball When the offence takes possession of the ball, the strategy is to advance the ball down the field of play and to score a goal. Players can move the ball by throwing it to a teammate or swimming with the ball in front of them (dribbling). If an attacker uses their arm to push away a defending player and free up space for a pass or shot, the referee will rule a turnover and the defence will take possession of the ball. If an attacker advances inside the 2-metre line without the ball or before the ball is inside the 2-metre area, they are ruled offside and the ball is turned over to the defence. This is often overlooked if the attacker is well to the side of the pool or when the ball is at the other side of the pool. Setting the ball The key to the offence is to accurately pass (or "set") the ball into the centre forward or hole set, positioned