<P> The term goal may also refer to the structure in which goals are scored . The ice hockey goal is rectangular in shape; the front frame of the goal is made of steel tube painted red (or another color depending on the league) and consists of two vertical goalposts and a horizontal crossbar . A net is attached to the back of the frame to catch pucks that enter the goal and also to prevent pucks from entering it from behind . The entire goal is considered an inbounds area of the playing surface, and it is legal to play the puck behind the goal . Under NHL rules, the opening of the goal is 72 inches (180 cm) wide by 48 inches (120 cm) tall, and the footprint of the goal is 44 inches (110 cm) deep . </P> <P> The object of the game of ice hockey is to score more goals than the opposing team . Goaltenders and defencemen are concerned primarily with keeping the other team from scoring a goal, while forwards are primarily concerned with scoring goals on the other team . Forwards also have to be defensively responsible while defencemen need to press offensively, and it is not unknown for goalies to attempt to position the puck for a counterattack, or even attempt to shoot against an unguarded net . </P> <P> For a goal to be scored, the puck must entirely cross the goal line between the posts and under the crossbar of the goal frame . A goal is not allowed under any of the following conditions: </P> <Ul> <Li> the puck is sent into the goal from a stick raised above the height of the crossbar </Li> <Li> the puck is intentionally kicked, batted, or thrown into the net by an attacking player; a puck may deflect off an attacking player's skate or body provided that player does not make a deliberate attempt to kick or redirect the puck with his or her body </Li> <Li> the puck enters the net directly after deflecting off an official </Li> <Li> the goaltender is impeded from preventing the goal by an attacking player </Li> <Li> the scoring team had too many men on ice at the time of the goal </Li> <Li> the goal was scored with a broken stick </Li> <Li> the net was dislodged prior to the puck entering it </Li> <Li> the goaltender shoots the puck after crossing the center line (however, replacing the goaltender with an extra attacker is allowed). </Li> <Li> the puck breaks into two or more pieces prior to any portion of it entering the goal . </Li> </Ul>

How much of the puck has to cross the line
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