I'm involved in a game where all of my stones but one are behind a prime - the other stone is on my 1 spot, so also can't be moved. I would think the spirit of the rule would mean that my opponent should unblock, but since I haven't collected ALL of my checkers behind his prime, I can see how a literal translation would suggest that he doesn't need to unblock. Does anyone know with certainty how this should be handled? I'm not especially concerned with this game in particular - I'm well behind and thus unlikely to win, and he can't block me for much longer anyway. I'm mostly curious as to how the rule should be interpreted.