PlaySudoku.us
Hard · Puzzle #687
9
3
2
3
8
1
7
7
5
2
1
6
8
9
5
7
2
3
8
4
3
1
7
6
8
7
"The measure of intelligence is the ability to change." — Albert Einstein
"The measure of intelligence is the ability to change." — Albert Einstein
"Doubt is not a pleasant condition, but certainty is an absurd one." — Voltaire
"Doubt is not a pleasant condition, but certainty is an absurd one." — Voltaire