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Could auto-pass be extended to include situations where we are in baulk, have to roll the dice but cannot get back on, because the oponent's home squares are blocked. I know that there is a sentiment that you may want to double. I cannot conceive of a position, where a double would be wise.
tonyh: what if you only have a few pieces left, and you were playing for a gammon, but now you have a piece captured and are trapped. You may want to double now.... that's why a choice would be good... if you get in that situation you have the choice of "double" or "autopass" - autopass would take you out of the game until you get a chance to come in.
grenv: 'autopass or double' would be fine; that would sort out the problem very well. So would your other suggestion about resigning and offering one point. Both great ideas.