The Center Line is a red line in the middle of the ice that cuts the ice surface in half and is used by linesman to determine if an icing situation is in effect. A faceoff dot is located along the line at `center ice`and is where pucks are dropped at beginning of games and after goals are scored.
Although the line is always red, each arena may appear a little different. Some use a checkered pattern and some diamonds so its not a solid red line.
Prior to 2005, the NHL had a form of offsides called Center-line Offsides or `Two-line pass,`which used the line as a determining factor to stop teams from sending players down the ice for long stretch passes. The rule is no longer enforced.