PlaySudoku.us
Medium · Puzzle #569
2
6
1
9
8
9
2
3
5
2
6
8
4
9
3
7
8
2
6
3
9
8
1
7
3
4
2
9
4
5
7
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.
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.
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.
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.