PlaySudoku.us
Expert · Puzzle #238
5
9
6
4
7
2
8
3
1
3
3
3
6
2
5
9
2
7
1
6
7
9
3
4
7
Techniques used
- Hidden Single
- Naked Pair
- Naked Single
- Naked Triple
- Naked Quad
- Pointing Pair
- Box-Line Reduction
- XY-Chain
- 2-String Kite
"The more difficult the victory, the greater the happiness in winning." — Pelé
"The more difficult the victory, the greater the happiness in winning." — Pelé
"Mathematics is the art of giving the same name to different things." — Henri Poincaré
"Mathematics is the art of giving the same name to different things." — Henri Poincaré