Hard
Puzzle
5
2
4
1
1
8
4
5
1
3
9
7
3
1
3
9
5
2
3
8
5
7
5
6
9
Logic required
Pairs
Hardest technique: Naked Pair
In this puzzle
- 40 Naked Single
- 32 Hidden Single
- 5 Pointing
- 10 Box/Line Reduction
- 16 Naked Pair
- 40 Hidden Pair
- 19 Naked Triple
- 32 Hidden Triple
- 11 Naked Quad
- 26 Hidden Quad
- 5 X-Wing
- 7 Swordfish
- 3 Jellyfish
- 1 Skyscraper
- 1 Two-String Kite
- 6 Simple Colouring
- 4 Empty Rectangle
- 10 Y-Wing
- 1 XYZ-Wing
- 5 W-Wing
- 67 WXYZ-Wing
Solution
Solve the puzzle to reveal the solution.