*Train the logical thinking ability.Multiple players involved more fun *Sudoku , originally called Number Place is a logic-based, combinatorial number-placement puzzle. *The Rules of Sudoku are extremly Simple. Fill in the empty boxes so that the numbers 1 through 9 Will appear only once in each Column, row and3*3 region. Contents : Wonder board 81 Code - Sudoku Tiles 44 puzzles with Gradually Increasing levels of difficulty 1 self-Assembly board for Creating an Infinite Number of Puzzles Detailed Instruction Leaflet - Step by Step Solutions page.