Calcudoku: Math Wizard combines the structure of Sudoku with arithmetic operations to create a uniquely satisfying number puzzle. Each puzzle presents a Latin square grid where every row and column must contain the numbers 1 through N exactly once. The grid is divided into outlined regions called cages, and each cage displays a target number with an arithmetic operation.
Each cage shows a label like 12×, 7+, 3−, or 4/. The numbers you place inside the cage must produce that target when the operation is applied. For example, a two-cell cage labelled 8+ needs two numbers that add up to 8. A cage labelled 12× needs numbers that multiply to 12. Single-cell cages simply show the value that belongs there.
Not sure which number goes in a cell? Tap multiple digits to pencil-mark your candidates. The cell shows all your options as small numbers. When you come back to a penciled cell, the first digit you type overwrites all pencil marks. Tap a digit again to remove it from your candidates. Use the eraser (⌫) to clear all marks from a cell.
Use ↩ Undo to step back — no time penalty. Use ✓ Check to highlight wrong cells in red — they stay red until you fix them. Use 💡 Hint to reveal one cell (+30s penalty).
Stuck? Tap the 💡 hint button next to the number pad. Each hint reveals one correct cell but adds a 30-second penalty to your timer. It also briefly highlights any incorrectly placed digits in red so you can spot your mistakes.
Seven levels from 4×4 Beginner to 9×9 Cyborg ☠. Smaller grids use fewer numbers and simpler cage operations. Larger grids introduce bigger cages with multiplication and division. Cyborg uses the same 9×9 grid as Scientist but with smaller cages, making logical deduction much harder.
Play Calcudoku: Math Wizard free online — no download required, no sign-up needed. Calcudoku: Math Wizard is a browser-based Puzzle game you can play on any device, any time. Challenge yourself with 7 difficulty levels, compete on the daily leaderboard, and share your score to challenge friends directly.
The daily challenge resets every midnight — build your streak and beat your personal best. Every game is fully playable on desktop and mobile without any installs.