Rules
Icing is an infraction in the sport of ice hockey. It occurs when a player shoots the puck across both the centre red line and the opposing team's goal line, and the puck remains untouched. ... Play is resumed with a faceoff in the defending zone of the team that committed the infraction.
Each team is allowed one 30 second time-out per game. Only one team is allowed to use their time-out during a single stoppage of play. There are three 120 second commercial time-outs per period during NHL games
Face-offs are generally handled by centres, although some wingers handle face-offs and very rarely, some defensemen as well. One of the referees drops the puck at centre ice to start each period and following the scoring of a goal. The linesmen are responsible for all other face-offs.
Checking in ice hockey is any one of a number of defensive techniques, aimed at disrupting an opponent with possession of the puck, or separating them from the puck entirely. It is usually not a penalty.
Overtime periods are extra periods beyond the third regulation period during a game, where normal hockey rules apply. Although in the past, full-length overtime periods were played, overtimes today are golden goal (a form of sudden death), meaning that the game ends immediately when a player scores a goal.
If a game remains tied after the five-minute, four-on-four overtime period, the teams will engage in a shootout, in which three skaters aside take alternating penalty shots against the opposing goaltender. If still tied after three shots per team, 'sudden-death' shots will be taken to reach a decision.
In 1922, the NHL introduced Rule 56, which formally regulated fighting, or "fisticuffs" as it was called in the official NHL rulebook. Rather than ejecting players from the game, as was the practice in amateur and collegiate hockey, players would be given a five-minute major penalty