I think the Wiki is dead wrong (I assume that's your source). Back Gammon and Tric Trac have nothing to do with "Shut the box". See for example Tric Trac. Tric Trac is a derivation from Back Gammon (or is it the other way around?), the board, checkers, dice etc. are the same but the rules for Tric Trac are completely different. Moreover there are many Tric Trac variants around.