Medium Hyper Sudoku
Ready to sharpen your skills? Medium Hyper Sudoku puzzles introduce interactions between the variant constraint and classic Sudoku techniques. You'll need to combine both skill sets to progress.
What to expect at Medium level
Medium Hyper Sudoku puzzles require you to combine the variant constraint with standard Sudoku deduction - Naked pairs, hidden singles, and unit scans. The constraint is more tightly woven into the grid, so you'll need to think a few steps ahead.
Best suited for players comfortable with Easy Hyper Sudoku who want to build their pattern recognition.
Difficulty overview
About Hyper / Windoku
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 for Medium Level
| 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 |
Master these, then take on Hard Killer Sudoku to learn Advanced techniques.