Medium Hyper Sudoku
7
3
2
5
9
3
5
1
6
6
9
2
5
5
9
8
4
6
7
2
1
4
7
5
7
3
9
4
1
9
8
2
How to play Hyper Sudoku
Standard Sudoku rules apply. The four green-shaded regions are extra boxes - Each must also contain 1–9. Treat them exactly like standard 3×3 boxes when eliminating candidates.
About Hyper / Windoku
Difficulty
★★★☆☆
3/5
Constraint Type
Extra Regions
Typical Givens
26–32
Avg. Solve (Medium)
15 min
Hyper Sudoku (also called Windoku) adds four extra shaded 3×3 regions to the standard grid. These regions overlap with the normal boxes and must each contain every digit 1–9, just like the standard boxes. The extra constraint can dramatically reduce candidate counts and often makes puzzles easier than they first appear.
Solving Techniques
| Technique | Description | Level |
|---|---|---|
| Region Overlap Analysis | Each Hyper region overlaps with two standard 3×3 boxes. Any digit placed in the standard box cells within a Hyper region also constrains the full Hyper region. | Beginner |
| Extended Naked Singles | With 13 regions total (9 standard boxes + 4 Hyper), naked singles appear far more often than in classic Sudoku. | Beginner |
| Pointing Pairs (Hyper) | If a digit in a Hyper region is locked to one row or column of that region, eliminate it from the rest of that row or column. | Intermediate |
| Hyper–Box Interaction | A digit placed in a standard box cell that falls inside a Hyper region removes that digit from the entire Hyper region. | Intermediate |
| X-Wing across Hyper | Hyper regions can serve as a fifth unit type in advanced X-Wing and Swordfish patterns. | Advanced |
Average Solve Time by Difficulty
Easy
6 min
Medium
15 min
Hard
30 min
Expert
55 min