A non-volcano version is tougher to determine. Espionage is geared towards the aggressors favor in this determination. If a 5 attacks a 5 Both are not destroyed. the defender is. so we must not deter solid defensive play. lets say no one attacks for 1st 50 moves in a large open version. We will now look at the ratings of the players if a 2000 rated player is playing a 1500 player and they have gone 50 moves we must assume that the 2000 player is waiting for the 1500 player to move carelessly to get an early advantage. the 2000 rated player might not move first in fear of sacrificing to early. it is possible to force a draw every game if it is played properly. mirroring a position can be quite daunting to overcome. so we must be careful in forcing draws. It has always been my contention if you cannot crack a solid defensive style than you are not that good of a player anyways, why force a person to play your style b/c your too weak to crack a solid defense?