The rules
- Fill in 1–N so each number appears once per row and column.
- Each cage (bold outline) shows a target and an operation in its corner.
- The numbers in the cage must reach the target using that operation (+, −, ×, ÷).
- Tap a cell and type a number.
Getting started: A one-cell cage is given outright, and a two-cell cage with “−” or “÷” has few options — fill the certain ones first.
Step by step
1Each cage (bold outline) has a target and an operation.
- 531
2The cage must make 9 with + — 5 and 3 and 1 works.
- 5463241
3The cage must make 192 with × — 4 and 6 and 2 and 4 works.
- 54621332461
4The cage must make 36 with × — 2 and 1 and 3 and 6 works.
4 more steps in this walkthrough — the full step-by-step solve is a Pluss feature. About Pluss →
Real puzzle no. 119682 with its solution, shown step by step.
Common questions
Can I play right in the browser?
Yes. Pick a CalcuDoku puzzle and solve it on screen — press “Check” to see if you are on track, and “Hint” if you get stuck. You can also print it.
Can I link to a specific puzzle?
Of course. Every puzzle has a number, and you can link straight to it: puzzles.flogvit.com/eng/calcudoku?nr=100. Replace 100 with the puzzle number — handy for challenging a friend with the very same puzzle.
Can I print the puzzles?
Yes. Each type has a print sheet for one or four puzzles with the answers on a separate page.
Are the puzzles free to use?
Yes, this is a free service. If you want to publish the puzzles elsewhere you must arrange it first — see copyright.