Pro Tip

Check columns before rows — columns are often harder to complete and contain more useful constraints.

Pro Tip
✓ Completed! 👍
3
6
7
1
4
9
5
7
1
3
4
3
9
2
8
6
4
2
4
7
9
7
8
1
9
8
3
6
Champion's Mindset

"You miss 100% of the shots you don't take." — Wayne Gretzky

Champion's Mindset