grenv: Although backgammon from a man on the bar is a rare phenomenon, a million games(*) suggests that it's happened more than a few times and so I imagine that it would have been reported by now if it were in the regular variant. I suspect that the bug occurs in variants which have bar pieces where entry is optional. ... but you might be right. Who can know but the man with the code.

(*) Although the scoring of gammons and backgammons wouldn't be applicable in quite a proportion of that million.