by Mindful Puzzle Books (Author)
In some sudokus main diagonals also contain the digits 1 through 9. This variant is called Sudoku X ("Diagonal Sudoku"). Use the check box Diagonals for such sudokus.
Number of Pages: 146
Dimensions: 0.31 x 9.02 x 5.98 IN
Publication Date: August 07, 2019