Pro Tip

Never guess. Every Sudoku on this site has a logical solution. If you feel stuck, try a different technique.

Pro Tip
✓ Completed! 👍
9
2
4
6
8
3
1
1
2
3
6
7
6
9
7
1
2
8
7
4
1
9
2
2
5
1
8
7
6
3
8
2
7
4
1
7
4
1
9
7
5
1
6
8
1
6
5
8
7
4
2
Mathematical Mind

"One cannot escape the feeling that these mathematical formulas have an independent existence and an intelligence of their own." — Heinrich Hertz

Mathematical Mind