PlaySudoku.us
Expert · Puzzle #965
2
5
7
9
7
8
5
9
2
1
3
6
9
9
7
1
7
2
9
4
7
6
5
2
7
3
Techniques used
- Hidden Single
- Naked Triple
- Naked Quad
- Naked Pair
- Pointing Pair
- Naked Single
- Box-Line Reduction
- XY-Wing
- Skyscraper
Every row, column, and box in a completed Sudoku sums to 45 — the sum of digits 1 through 9. A useful sanity check.
Every row, column, and box in a completed Sudoku sums to 45 — the sum of digits 1 through 9. A useful sanity check.
"You have power over your mind, not outside events. Realize this, and you will find strength." — Marcus Aurelius
"You have power over your mind, not outside events. Realize this, and you will find strength." — Marcus Aurelius