PlaySudoku.us
Medium · Puzzle #686
1
7
6
3
8
6
1
2
7
7
5
4
1
5
1
6
4
7
7
9
8
5
1
1
7
2
8
3
2
5
4
1
5
4
8
3
4
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.