SHAPEDOKU
Level 1
🎉
Level complete!
Every number found its place.
Every number found its place.
SHAPEDOKU is an area puzzle in the Shikaku tradition: split the grid into rectangles so that each rectangle contains exactly one number, and its area equals that number. Every puzzle has a single solution and needs no guessing.
Divide the whole grid into rectangles. Each rectangle must contain exactly one number, and cover exactly that many cells. When every cell belongs to a valid rectangle, the puzzle is solved.
A classic Japanese logic puzzle genre, popularised by the puzzle publisher Nikoli — the same family of paper puzzles that gave the world sudoku.
No. Every puzzle is constructed with a unique solution that pure deduction reaches. If you feel forced to guess, there is a cleaner step you have not seen yet.
Start with the big numbers and the corners — large areas have few possible shapes, and edges cut the options further. Marking what a number cannot reach is often more useful than deciding what it is.
Sudoku is about placing symbols; Shikaku is about carving space. It scratches the same logic itch but uses a completely different part of your eye.
No. It is a calm game — no clock, no lives, no pressure. A puzzle takes as long as it takes.
Yes, it is free to play in the browser.
No, it runs on the page at shapedoku.bnj.app.
It exercises spatial reasoning and step-by-step deduction — and unlike doomscrolling, it leaves you calmer than it found you.
Yes, it plays well with touch — tracing rectangles with a finger is the natural way to solve it.
More from BNJ: SPELLFALL · Sorgu Panosu · Color Hunt · Boyama — see them all at bnj.app.