The NHL "Winter Classic"

[golfer]

Originally Posted by Scav

they do but I never watched it or learned it. I know how to skate in hockey skates also.
I was always baseball/football/basketball

I can play hockey, I just can't skate.

You can only check someone who has the puck, or very recently had it. You cannot check someone from behind into the boards. However, these rules are policed and interpreted by semi-blind dimwits, also called referees (there are two on the ice during the game).