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! 👍
6
3
4
1
8
5
2
6
2
8
5
1
7
3
1
7
2
9
9
4
3
9
1
8
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