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