Jacks Back (poker)
A form of five-card draw poker in which each player in turn
looks at his cards, and opens if he has jacks or better (and
if he wishes). If no player opens for high--and to do so he
must have at least a pair of jacks (and he must show openers
at some point)--then the hand is played for low (as described
under ace-to-five), again starting with the player to the left
of the dealer. At this point, the game becomes bet-or-fold.
