The game comes with several 3X3 grids in three levels of difficulty. A number appears in each of the nine spaces of a grid. Each player chooses a grid. Players take turns rolling four d12 PlaySmart Dice (two with 3 through 8 twice, and two with 4 through 9 twice) and then using mathematical operations to combine one or more of the numbers on the dice to equal one of the numbers in the grid. A chip is placed on the grid number, and the first player to complete a pre-selected pattern in the grid with his chips is the winner.

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