Pro Tip

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

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

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

Food for Thought