PlaySudoku.us
Hard · Puzzle #571
8
3
1
5
9
4
4
6
9
1
5
4
7
2
3
4
8
3
5
6
1
2
2
1
5
3
"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