ITEM NAME:Sudoku Chess Digits 1 To 9 Can Only Put Once In Any Row Line And Check Inte C1E5 Sudoku Chess Digits 1 To 9 Can Only Put Once In Any Row Line And Check Inte C1E5 Age:more than 3 Years Teaching Mode:Illustration colour:Brown + blue Material:Wooden size:23*23*4cm Package Contents: 1 * Chess board 81 * chess pieces 1 * chess manual