PlaySudoku.us
Hard · Puzzle #493
4
6
3
7
8
5
9
1
6
8
3
2
4
6
2
3
9
8
5
5
8
7
7
9
8
6
2
7
Scan by digit rather than by cell: find everywhere '7' must go before switching to '8'.
Scan by digit rather than by cell: find everywhere '7' must go before switching to '8'.
The 16×16 version of Sudoku is called "Super Sudoku" and uses hexadecimal digits or letters.
The 16×16 version of Sudoku is called "Super Sudoku" and uses hexadecimal digits or letters.