Offside, Two Line Passes and Icing are the most common infractions you will see during a game. Here is a brief description along with a picture which shows what happens on the rink during these infractions.
A team is offside when any member of the attacking team precedes (B) the puck carrier (A) over the defending team's blue line. The position of the player's skates and not that of his stick is the determining factor. If both skates are over the blue line before the puck, the player is offside. If he only has one skate over the blue line and one on the blue line, he is onside. In the diagram notice how player B crosses the blue line before player A who has the puck does. The team with the offside player must touch the puck for the whistle to be blown. If the offside player comes back out of the zone before the puck, the play will be called off.
Two Line Pass
When a player (A) passes the puck from his defending zone to a teammate (B) beyond the center red line therefore crossing both the blue and center red lines, it is a two line pass. The position of the puck and not the player's skates is the determining factor. In the diagram notice how player (B) gets the pass after he has crossed the red line, and player (A) made the pass to player (B) before he has crossed his blue line.
Icing is not permitted when teams are at even strength.
Icing occurs when a player on his team's side of the
line shoots the puck all the way down the rink, it crosses the
goal line at any point
other than the goal itself. Play is then stopped and the puck is returned
to the other end of the rink for a face-off. Icing is not called if the
goalie plays the puck by leaving his net. In the diagram notice how player
(A) shoots the puck
from behind the red
down the rink and behind the red