One answer is only the beginning.

A small game with room to explore

Mathoji.com publishes and maintains MATHOJI. We built it around a simple question: what changes when a maths puzzle asks you to find every answer? A lucky guess can start the board, but a complete solution needs a method. Correct rows stay visible so you can follow your own progress.

There is one shared equation each day and a library of 1,100 catalog puzzles across Easy, Medium, Hard, Expert and Master. Master introduces fractions, square roots and cube roots through a puzzle-specific keypad. The daily archive keeps published equations available after their original date.

For a curious break

The game is for a general audience of puzzle enthusiasts and people who enjoy arithmetic and logical search. It is not a formal course, a learning assessment or a promise of improved cognitive performance. Choose a comfortable level, take your time and use a hint when it helps.

Learn from a real example

Our selected walkthroughs explain the bounds, factor cases and duplicate rules behind specific playable equations. The solving guides connect those examples to techniques you can reuse. Answers stay behind optional reveals so that reading the page does not immediately spoil the puzzle.

How the content is made

Puzzles come from our equation templates and checked catalog. The arithmetic engine enumerates the permitted choices and groups equivalent additions and multiplications. Selected explanations were prepared with AI assistance and checked against the engine; daily puzzle pages are generated from published puzzle data, rather than individually hand-written each day. Read the full checking process.

Play on your terms

No player account is required. Progress and performance save on your device or browser, and Continue returns to an unfinished game. There is no cross-device account sync or public leaderboard. Web hints and reveals are free. Optional website analytics has its own opt-in and does not affect saving or play.

Contact the publisher

Published by Mathoji.com. For a puzzle correction, support question or privacy request, email [email protected]. Include the puzzle URL and the relevant equation when reporting a mathematical issue. We welcome specific corrections and keep substantive website changes in the update notes.