PlaySudoku.us
Evil · Puzzle #690
3
5
1
8
9
4
1
2
5
4
7
1
6
7
8
4
8
5
9
6
7
2
9
8
6
Techniques used
- Naked Single
- Hidden Single
- XY-Wing
- Naked Pair
- 2-String Kite
- Pointing Pair
- W-Wing
"The hardest game to win is a won game." — Emanuel Lasker
"The hardest game to win is a won game." — Emanuel Lasker
If pointing pairs aren't visible, try box-line reduction. They're inverses — if one fails, try the other.
If pointing pairs aren't visible, try box-line reduction. They're inverses — if one fails, try the other.