PlaySudoku.us
Hard · Puzzle #620
8
4
1
6
5
8
7
5
4
1
3
9
1
4
5
2
2
6
2
5
1
9
5
6
4
8
2
For hard puzzles, do a full pencil-mark pass before making any moves. Incomplete marks are worse than no marks.
For hard puzzles, do a full pencil-mark pass before making any moves. Incomplete marks are worse than no marks.
"That which does not kill us makes us stronger." — Friedrich Nietzsche
"That which does not kill us makes us stronger." — Friedrich Nietzsche