PlaySudoku.us
Hard · Puzzle #517
6
3
1
2
7
3
7
9
1
8
9
2
3
8
5
6
1
8
4
1
4
3
8
2
6
8
5
4
A valid Sudoku puzzle has exactly one solution. If it has two or more, it's considered broken.
A valid Sudoku puzzle has exactly one solution. If it has two or more, it's considered broken.
"The measure of who we are is what we do with what we have." — Vince Lombardi
"The measure of who we are is what we do with what we have." — Vince Lombardi