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Sudoku X (diagonal sudoku) differ from ordinary ones only in that, apart from the uniqueness of numbers in quadarats, columns and rows, there should not be identical numbers in two main diagonals from the lower left corner to the upper right and from the lower right corner to the left top.
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Sudoku X
341901
14
14
x4
2022-11-24 02:19
16:48
87%
3%
1
53%
2021-04-08
8
3
0
0
2