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I think it should be handled like it is at IYT... they have a version with it, and a version without it. The version with it, is a 5 point game. Maybe here we could decide for ourselves when creating the game how many points it would be..(which of course we already do with multi point matches)
I definitely wish the doubling cube was here.. and I'm sure at some point, it will be.
But as discussed a while back on the backgammon discussion board, I would rather backgammon be fixed to follow the "if you CAN use both dice, you MUST" rule, first.