Pro Tip

When a box has only two empty cells, you know exactly which two digits fill them.

Pro Tip
✓ Completed! 👍
9
6
4
2
9
4
6
5
7
4
8
9
2
9
6
9
7
3
5
6
1
4
7
2
5
3
4
2
9
3
1
Food for Thought

"First say to yourself what you would be; and then do what you have to do." — Epictetus

Food for Thought