Ice hockey is a sport where two teams face off, each of which may carry a maximum of 22 players and three goaltenders on their roster. Up to five players may skate on the ice at one time for each team and normally the goaltender is used as their sixth on-ice player. Each team battles for possession of the puck, which is a disk made of vulcanized rubber that serves the same function as a ball in other competitions, and players use hockey sticks to control it. The teams compete to score a goal into their opponent’s net to score points.
The size of an Ice hockey rink is 56 to 61m in length and 26 to 30m in width. The minimum standard for an international contest is 60m in length and 29 in width. The goals must be 1.2m high and 1.8m wide. The rink is surrounded by protective boards that are made of lumber or plastic materials and are 1.2 to 1.22m in height. Above the boards rests a glass barrier, which is either made of tempered glass or plexiglass that protects the spectators. Above the glass behind each goal is a net to keep the puck from going into the spectator area. The rink is divided into two sections using a red-coloured centreline. Also, the rink can be seen to be divided into three sections with two blue lines running parallel on either side of the red centreline between the goals.
A game consists of three 20 minute periods.
There is a 15 minute time-out between each period.
In case there is no victory or defeat after three periods, the tournament carries an overtime under a “Sudden Death” rule which means the first to score wins the game. If no score is made, the Game Winning Shots Procedure applies.
The number of the team entries who can participate in the competition is 25 for men and 23 for women, respectively including the goalkeeper.
Only five players and one goaltender may participate in on-ice play at a time for each team.
Each team is organized with one goalkeeper, two defensemen and three forwards during play.
They are the last line of defence and hold an important role defending their respective net.
They have the most influence on the outcome of the game.
They are divided into left defence (LD) and right defence (RD).
The position holds not only the responsibility of defence, but also the starting of attacks for their team.
Persistent body checks, linkage with the forwards, and accurate situational judgment are demanded.
Each offensive line has a centre forward or counterman, who connects the wingers and defence. This is a striker position.
Centres must have all-round techniques, including supporting the defence, by using the wingers on their lines.
The wingers are divided into right wing (RW) and left wing (LW).
Although the wing is a goal getter, if the attacker changes, the winger must quickly go to the fore (defensive position), without fail.
The speed of the wing will become a threat to the counterpart defence. Speed, shooting capacity, and maintenance abilities are demanded.