PlaySudoku.us
Medium · Puzzle #668
2
4
8
1
3
9
8
2
6
5
3
9
3
4
5
1
6
1
3
8
7
6
4
9
5
2
8
3
7
1
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.