Backcheck 3v3 SAG: X starts by attacking 3 v 0 with 3 opposing O players backchecking. When / if the defensive team wins the puck, they breakout to the next their Ooffense waiting in "N" zone lines drawn on ice (NZ). A new offense can then straight attack (enforce offsides) in the other direction. After they are stopped on offense by the Xbackcheckers the cycle starts again and the O become backcheckers. Offense-Backcheck/Defense-Breakout to your team-Change.