Players are split into 2 lines on each side of ice. X starts on red line, skates towards the blue and pivots. He receives pass from D. The X skates down and tries to score, D is chasing with a better angle to back check to the net. Its a race.

Coaching:
D is trying to get in front of play and gain position.
X is trying to cut a defender off and not allow them to gain position.