SETUP
On the 1st whistle, O1 passes to X1
X1 must get outside the blue line before attacking the zone 1v1.
O1 must get angle skating forwards. Play it out until a whistle.
On the second whistle, 2 things happen:
the X4 player in the other zone passes to the O4 player. O4 must get outside the blue line before they can attack.
the players in the first 1 v 1 stop and skate down to the other end of the ice to join their teammates to make it a 2 v 2.
It becomes a continuous 2v2.

Tags: Communicate on defense, "get sticky" on backcheck