If you're a fan of Sudoku, you and your family will love this colorful alternative. Instead of using numbers to solve the puzzles, ColorKu uses brightly colored wooden balls.

Colorku is a logic-based number placement puzzle.

The object of the game is to fill a 9x9 grid with colored balls so that every row and column have a ball of each color with no repeats and each 3x3 grid has a a ball of each color with no repeats. The puzzles start with a partially completed grid and the players must fill in the rest.

The gameboard-crafted of solid wood-includes 81 balls in 9 different colors, 104 puzzle cards, solutions booklet, color conversion card and storage tray. There are 5 levels of difficulty.

Place it on the coffee table and you're ready whenever you feel like a challenge.