Make it add up.
Tap a square, choose a number from the keypad, and submit your equation. Follow the usual order of operations, including brackets.
Small squares. Big possibilities.
How to play MATHOJI
Fill the empty squares to make the equation true. Keep going until you find every unique solution: each one earns its own green row.
Find another way.
The counter shows how many solutions remain. Swapping the two sides of an addition or multiplication counts as the same answer.
Turn every row green.
Complete every solution to finish. Need a nudge? Hint helps with the next answer; Reveal fills the current solution.
1 + 3 = 4 3 + 1 is the same unique solution.
Choose your kind of challenge
Five levels. 1,100 puzzles. Keep playing.
Choose a level in the Lobby. Random stays at your chosen difficulty, so your next puzzle is always the challenge you asked for.
Easy
Start with short equations and familiar arithmetic.
Medium
Combine operations and look for new number patterns.
Hard
Balance more blanks and several operations.
Expert
Work through brackets and more intricate equations.
Master
Explore fractions, square roots and cube roots with a puzzle-specific keypad.
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A few good questions
More ways to make time for maths.
Is there a new math puzzle every day?
Yes. Everyone gets the same fresh daily equation at midnight UTC. Open the Daily calendar to revisit the archive. Use Random or the Lobby to keep playing without waiting for tomorrow.
Can I play without creating an account?
Yes. The game opens as a guest and saves progress in your browser. Connect Google from Stats or Settings to recover that account on another device. Clearing browser data can remove access to an unconnected guest account.
How do I sync between my phone and computer?
Connect the same Google account on both devices. Saved daily, archive and catalog puzzle progress syncs when you are online. The mobile app needs the version that supports cross-device puzzle sync.
How do hints and reveals work on the web?
Web hints and reveals are currently free. An assisted result is recorded as assisted. You never need to click an advertisement to earn a hint.
What counts as a unique solution?
Reordering addition or multiplication does not create another solution. For example, 1 + 3 and 3 + 1 count as one. Subtraction, division, brackets and the structure of the equation still matter.
Can I share a puzzle with friends?
Yes. Open Friends to share a link to the puzzle. Your browser may offer its own share menu; you can also copy the link or open an email, message or WhatsApp invitation. You choose the recipient and confirm sending.