Shift is basically a sliding-tile puzzle for up to four players. The board is a 6x6 grid, with an extra row of 6 on each side to serve as a home base, for a total of 60 squares. Each player has 12 tiles in his color, plus an extra 11 white tiles to fill out the board. On his turn, a player makes six shifts to the puzzle, attempting to move his tiles across the board. The winner is the first person to move six of his pieces into the home base across from him. With four players, the game can also be played in partnership. - BoardGameGeek