Primo:
After (N)b1-a3+GO, Primo responds with d2-d4.
If I then try any black move, Primo responds :"Er r"
If i try b1, Primo responds :"Er r"
If I play (N)a3-b1, Primo responds with G8-F6.
So it executes 2 or 3 moves for white...
/Lars