Mondo Knows Games
Magic Square
The oldest number puzzle there is: place one to nine in a three-by-three grid so rows, columns and both diagonals all add to fifteen. There is more than one answer.
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How to play
- Pick a number, then a square.
- Every row, column and diagonal has to add to fifteen.
- Tap a filled square to take the number back out.
Controls
Tap a number, then a square.
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Questions people ask
- How do you play Magic Square?
- Pick a number, then a square. Every row, column and diagonal has to add to fifteen. Tap a filled square to take the number back out. Tap a number, then a square.
- Is Magic Square free to play?
- Yes. Magic Square runs in the browser for nothing: no download, no account and no sign-up. Magic Square sits on the Numbers shelf at Mondo Knows, alongside numbers and maths games.
- How long does a game of Magic Square take?
- 2-5 minutes. It is rated easy, and tap a number, then a square. Your best score stays on your own device.
- Does Magic Square work on a phone?
- Yes. The board sizes itself to the screen, so Magic Square plays the same on a phone as on a desktop, and touch controls replace the mouse. Nothing needs installing.
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Everything runs in your browser. Scores and bests are stored on your own device, not on a server.