PlaySudoku.us
Evil · Puzzle #463
6
5
7
3
9
2
4
2
9
3
4
9
6
9
1
2
1
8
7
5
1
6
4
3
Techniques used
- Naked Single
- Hidden Single
- Naked Pair
- Naked Triple
- Pointing Pair
- Box-Line Reduction
- W-Wing
- 2-String Kite
- Finned X-Wing
- XY-Chain
- XY-Wing
"To know what you know and what you do not know — that is true knowledge." — Confucius
"To know what you know and what you do not know — that is true knowledge." — Confucius
After placing a digit, immediately check its row, column, and box for new naked singles.
After placing a digit, immediately check its row, column, and box for new naked singles.