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