The game helps players build spatial reasoning, problem solving and patterning skills in a fun way. Simply use the colorful cubes to cover the board so that each row, column and 3 x 2 box contains a different color. The game includes 36 genuine Unifix Cubes, ten full-color Sudoku game boards and an answer key. The boards increase in difficulty. This product is a Parents’ Choice Award and Director’s Choice Award winner. Launch date: March 2007.