Medium Hyper Sudoku

Four extra 3×3 boxes overlap the standard grid, creating additional regions that must each contain 1–9 exactly once.

Easy Medium Hard Expert

Hyper Sudoku at medium difficulty. Scan all four hyper regions for hidden singles after every placement — the extra constraints resolve the board faster than standard Sudoku.

2
3
1
9
4
9
2
1
3
3
1
8
9
8
4
7
4
8
8
3
1
5
6
3
9
5
6
3
7
9
2
4
Mistakes
0/3
Score
-
Time
00:00
Try Hard Hyper Sudoku →
Progress0%

What is Hyper / Windoku?

Difficulty
★★★☆☆
3/5
Constraint Type
Extra Regions
Typical Givens
26–32
Avg. Solve (Medium)
15 min

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 Hyper / Windoku to learn Advanced techniques.

Techniques to Master at Medium

  • Hidden Singles technique — Run hidden-single scans over the four hyper windows as extra houses; a digit confined to one window cell is the most common medium-level breakthrough in Windoku.
  • Obvious Pairs technique — A pair locked inside a hyper window eliminates across the window and the standard boxes it overlaps — every pair you find here pays out double.

Average Solve Time by Difficulty

Easy
6 min
Medium
15 min
Hard
30 min
Expert
55 min
Want a full walkthrough of rules, strategies, and solving steps? How to Play Hyper / Windoku →

Related Variants

Diagonal Sudoku

Extra houses again, drawn as two diagonals instead of four windows — the same scan-more-units discipline.

Jigsaw Sudoku

Region thinking taken further: the nine boxes themselves become irregular shapes you must learn to read.

Samurai Sudoku

If overlapping regions are the appeal, samurai overlaps entire grids — five of them sharing corner boxes.

Frequently Asked Questions — Medium Hyper Sudoku

What techniques do I need for medium Hyper Sudoku?
Medium puzzles require using all 13 constraint groups actively (9 rows + 9 columns + 9 standard boxes + 4 hyper regions = although the standard boxes count differently when overlapping). Apply hidden singles and naked pairs within each hyper region just as you would within a standard box.
How do hyper regions interact with standard 3×3 boxes?
Each hyper region overlaps with parts of four standard boxes. A digit placed in a hyper region eliminates that digit from its row, column, the standard box it sits in, and the entire hyper region. This overlap makes hyper cells particularly powerful for chain eliminations across the board.
What is a 'hyper hidden single'?
A hyper hidden single is a digit that can only go in one cell of a hyper region after row, column, and standard-box eliminations. Scanning each of the four hyper regions for hidden singles is often the fastest way to make progress in medium Hyper Sudoku.
How does Hyper Sudoku compare to standard Sudoku in difficulty?
Hyper Sudoku is generally easier than standard Sudoku at the same given count because the extra regions provide additional eliminations. A medium Hyper puzzle typically requires fewer advanced techniques than a medium standard puzzle.
How long does a medium Hyper Sudoku take?
Most players finish in 10–20 minutes. Once you train yourself to scan the four hyper regions after every placement, the solve accelerates significantly compared to standard Sudoku.

More questions? See the full Hyper / Windoku guide.