Sudoku X: 250 Medium Sudoku Diagonal Puzzles - Paperback
Sudoku X: 250 Medium Sudoku Diagonal Puzzles - Paperback
$20.48
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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.