Math Insight

Every row, column, and box in a completed Sudoku sums to 45 — the sum of digits 1 through 9. This is a useful sanity check.

Math Insight
✓ Completed! 👍
3
9
7
1
8
6
8
1
7
8
4
3
9
5
6
1
6
8
2
3
9
2
9
Math Insight

Every row, column, and box in a completed Sudoku sums to 45 — the sum of digits 1 through 9. This is a useful sanity check.

Math Insight