Here is one scenario for a volcano draw situation. Opp material: 4,2,Spy protected base with bombs. You: 3,1,1, protected base with bombs. in this scenario... if the 3 and 4 are separated by more than 2 squares this is a drawn position. i call it the ring around the rosie. the four can never catch the 3 and the 3 can never get to the base since it is protected by bombs and neither player has any sabs. if however either base is exposed then it is not a draw. if a base is exposed and there is sufficient material to win IF the 2nd most powerful piece remaining must be more powerful than the 2nd most powerful piece remaining of the opp that has his base exposed. if not than it is still a draw.