double side play

A trick taking game where each card has 2 numbers, one black and one white, that have a difference of 6 (e.g. 1 and 7). Players must follow suit if they can. The first six tricks are player with the black numbers and the last six with the white numbers. Players are assigned a series of bids to hit during the course of the game. The first player to hit one of their bid options two times wins.