PlaySudoku.us
Hard · Puzzle #710
3
5
6
1
4
6
7
2
6
2
5
1
6
1
2
3
8
5
7
6
4
7
2
1
1
5
4
2
9
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.