COLORKU
A colorful spin on Sudoku, this glossy board uses marbles instead of numbers to solve each puzzle. How to play: Place one (only one!) of every colored marble in all nine rows, columns and 3 x 3 squares. Strategy is the name of the game here: Don’t lose your marbles trying to crack different combinations (there’s only one correct solution to each puzzle!) Includes 104 puzzles, a color conversion card and a solution booklet with five levels of difficulty.