PlaySudoku.us
Easy · Puzzle #647
5
8
4
2
7
4
1
2
8
6
7
8
9
2
4
5
7
6
3
2
1
9
2
4
7
1
7
4
3
5
3
1
6
2
4
8
7
8
7
9
5
1
2
2
7
3
5
1
"Chess is the touchstone of intellect." — Johann Wolfgang von Goethe
"Chess is the touchstone of intellect." — Johann Wolfgang von Goethe
When a box has only two empty cells, you know exactly which two digits fill them.
When a box has only two empty cells, you know exactly which two digits fill them.