Shikaku logic puzzle
Pixtangle
Slice the grid. Watch pixel art bloom.
Split the board into rectangles — every number is the size of its own rectangle. Fill the whole grid and the puzzle blooms into a pixel-art picture for your collection.
Free on iPhone, iPad and Android
How to play
Pixtangle is built on Shikaku, a Japanese pencil-and-paper logic puzzle also known as Rectangles or Divide by Squares. The board is a grid with numbers in some cells: split it into rectangles so that every cell belongs to exactly one of them.
- Drag across the board to draw a rectangle around a number.
- Each rectangle holds exactly one number…
- …and that number is its area in cells.
- Cover the whole board, and the picture appears.
- Squares count as rectangles: a 4 can be 2 × 2 as well as 1 × 4.
- A question mark is a rectangle of unknown size: it still holds exactly one clue, and its area is up to you.
Tips for solving
- Start with numbers that fit only one way: a clue hemmed in by the edge and its neighbors often leaves a single shape.
- A prime number — 2, 3, 5, 7 — can only be a straight line of cells, one row or one column.
- Look for cells that only one number can reach: they must belong to that number’s rectangle.
- Big numbers in corners and along the edges have few places to go — try them early.
- Stuck? A hint lights up one correct rectangle, and you carry on from there.
A closer look
What’s inside
270+ pixel arts
Ten categories, from animals to space. Each art is a board shaped like the picture — solve it to color it in.
A fresh challenge every day
A uniquely shaped daily board. Keep your streak alive for bigger rewards.
Six difficulties
Endless classic levels, from quick warm-ups to Insane brain-benders, plus Master’s Path arts for your wins.
Rarities to hunt
From common to legendary: complete a whole category to unlock its rarest art.
Achievements and leaderboards
Game Center on iPhone and iPad: dozens of achievements and weekly leaderboards to climb.
Made to relax
Dark and light themes, gentle sounds and haptics. No account, works fully offline.
Questions and answers
What is Shikaku?
A logic puzzle from Japan: divide a grid into rectangles so that each one holds a single number equal to its area. It is also called Rectangles or Divide by Squares.
Is Pixtangle free?
Yes. Pixtangle is free on iPhone, iPad and Android, with ads and optional in-app purchases — including a bundle that turns the ads between levels off.
Does it work offline?
Yes. There is no account and you can play without the internet; your progress stays on your device and is backed up with your phone’s backup.
How hard does it get?
Six difficulties take you from small Easy boards to large Insane ones full of question-mark clues, plus a new daily challenge and a timed Marathon.
Support
Questions, ideas, or something not working? Write to us — we read every message.
pixtangle.support@paastudios.com