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7×7 Shikaku puzzles
A 7×7 Shikaku has 49 cells and typically 8–12 numbers. It is small enough to finish in a few minutes but big enough that the basic techniques — corners, primes and reachability — start to matter.
0 rectangles · Drag to draw · Tap a rectangle to erase · Ctrl+Z undo · H hint
Solving a 7×7 Shikaku
- Seven is prime: a 7 on a 7×7 board is always a full row or column.
- Check each corner cell and ask which numbers can reach it.
- Use the Medium level to practise the overlap technique.
New to the puzzle? Read how to play Shikaku and then the strategy guide.
7×7 Shikaku questions
How long does a 7×7 Shikaku take?
Most players finish a 7×7 Shikaku in about 3–6 minutes, depending on the difficulty level and experience. Your personal best and average times are saved in your browser.
How many numbers are in a 7×7 Shikaku?
It depends on the level. Easy puzzles use more, smaller rectangles; Hard puzzles use fewer, larger ones. Whatever the count, the numbers always add up to 49, the total number of cells.
Is every 7×7 puzzle solvable without guessing?
Yes. Every puzzle has exactly one solution, verified by our solver. Easy puzzles need only basic deductions; Hard puzzles may need longer chains of reasoning, but never a lucky guess.