Pro Tip

When a row, column, and box all intersect, the intersection cell is the most constrained — always check it first.

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

"All truly great thoughts are conceived while walking." — Friedrich Nietzsche

Food for Thought