Skip to content
MINDONGYL

Solo · FREE PLAY

Calcudoku

Read the rules ↓
Logic & numbers
Choose your controls and enjoy a free round.
No account neededRules & controls →

Game guide · MINDONGYL

Calcudoku: instructions and practice

Open Calcudoku, check the instructions and begin a round. Fill a 4×4 Latin square and satisfy every cage arithmetic target. Look at what changes after your first action. Choose a comfortable screen position before beginning. Keep the game area visible while you use its controls.

Twelve puzzles with addition, multiplication, subtraction and singleton cages.

Practice with a purpose

Read one step at a time and try it on the playing area. Match the instruction to the control you use. Keep the objective visible.

What you need to achieve

Fill a 4×4 Latin square and satisfy every cage arithmetic target. An attractive position is not enough unless the goal is met. Notice how the game responds to your input.

Step by step

  1. Select a square and enter 1–4.
  2. Combine all cage digits using its shown operation.
  3. Subtraction uses the absolute difference.
  4. Check puzzle verifies the entire grid.

How to interact with the game

Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution. Keep the playing area visible while using these controls. Read the example below alongside these instructions.

An example before you play

A two-cell 6× cage contains 2 and 3 in a 1–4 puzzle. Your next round may have a different position, so inspect it before acting. Read the matching step again.

Check this before moving on

A correct cage total does not permit duplicate digits in a row. Take a moment to reassess the position before continuing. Read one step at a time and try it on the playing area. Match the instruction to the control you use.

More answers before you play

As a new player, what is the goal of Calcudoku?

For clarity: Fill a 4×4 Latin square and satisfy every cage arithmetic target.

Before I begin, how do I control Calcudoku?

Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution.

For my first round, what example helps explain Calcudoku?

For clarity: A two-cell 6× cage contains 2 and 3 in a 1–4 puzzle.

While reading the Guide, what should I watch out for in Calcudoku?

For clarity: A correct cage total does not permit duplicate digits in a row.

While learning, what format does Calcudoku offer?

The key detail is this: Twelve puzzles with addition, multiplication, subtraction and singleton cages.

Before I begin, which play mode does Calcudoku use?

For clarity: The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.

While learning, where should I start with Calcudoku?

For clarity: Select a square and enter 1–4.

While learning, do I need an account or a payment for Calcudoku?

The key detail is this: No player account or payment is needed. Game scores are recreational results, not cash prizes.

For a quick reminder, how can I find Calcudoku again?

For clarity: Use the Games list or save this game page in your browser bookmarks. The Guide is linked from the playing page.

For a quick reminder, how do I report an issue with Calcudoku?

Here is the relevant explanation: Use the contact form and include the game name, browser, device and the actions that led to the issue. Do not send passwords or payment details.

Games

Try another game

View all games
Choose a Card Game (opens in a new tab)