Counterstrike (1976)

A great backgammon variant with a unique board and playing twist. Players take turns rolling two dice and moving pieces along a three row, six column field. An opponent may strike a single piece, knocking it into the trap. Pieces stacked two high are only susceptible to a counterstrike in which the moving player rolls doubles. Pieces stacked three high may not be struck. It is also unique that pieces may move forward and backward on the field.