Color Cube Sudoku is a 3x3 matrix of 9 plastic cubes, each cube having 24 individual colored tiles. The object is to play the classic game of Sudoku, but with colors rather than numbers. Players work (and work, and work) to arrange all nine cubes so that no colors repeat—in any row or any column. And once a player has exhausted the more than ½ a million solutions for "traditional" mind-blowing Sudoku puzzle, Think Fun offers a few bonus challenges. As one of our more intrepid testers said, " … for neither the weak willed nor faint of heart."

Fascinating, challenging, maddening, and fun.