Box Split

The rectangle logic puzzle — split the grid so each number is its box's size

📦 Split the grid into boxes — each number is its box's size!

Math · Ages 7+

Like every game on iplay.free, Box Split is completely free — no ads, no sign-up, and no downloads. It runs right in your browser, so there's nothing to install and nothing to buy. With no ads and no account, it's safe to hand to a child and easy to pick up any time.

How to play Box Split

• Goal: Split the whole grid into boxes (rectangles or squares). Every box holds exactly one number, and that number is how many squares the box covers.
• How to play: Drag from one corner of a box to the opposite corner. Tap a box to take it away. Tap a number to see its factor pairs — 12 can be 1 × 12, 2 × 6 or 3 × 4 — and the boxes that still fit.
• Win: Every square is in a box and every number has its own box. Each puzzle has exactly one answer, and you can always reason your way to it — no guessing! Solve it without hints for three stars.

Game modes

Pick the level that suits you — Box Split offers 4 ways to play:

• Easy
• Medium
• Hard
• Expert

Skills you'll practise

number sense, arithmetic, logical deduction, spatial reasoning

Did you know?

📐 Puzzles like this were first printed in Japan in 1989 by the puzzle magazine Nikoli, which calls them Shikaku — “cut it into rectangles”. The idea came from one of the magazine's readers, who many years later became the company's president!

Frequently asked questions

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Are there any ads?

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Is it safe for kids?

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Do I need to download or install anything?

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What devices and browsers work?

Any modern browser — Chrome, Safari, Firefox, or Edge — on a phone, tablet, laptop, or desktop, including school Chromebooks.