Step 1

Standard vertical setup - note the dump is 45 degree behind on the open side - sufficient space to avoid picks near the back of stack is crucial

Step 2

2nd back of stack (6) cuts under (reasonably wide) to whichever side he choses

Step 3

Back of stack cuts to the opposite side - being sure to avoid picks

Step 4

The new back of stack (5) cuts deep

Step 5

All three steps should be run much closer to simultaneously though

Step 6

Like so