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YALONGJS

RULES & PRACTICE

How to Play Calcudoku

Play Calcudoku ↗

Game guide · YALONGJS

Making your first moves in Calcudoku

Start Calcudoku by looking at the playing area and its controls. Fill a 4×4 Latin square and satisfy every cage arithmetic target. Use the example below to understand a decision. Choose a comfortable screen position before beginning. Use the example below to understand a decision.

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

Give this approach a try

Locate the buttons and input area before beginning a long round. Use the on-screen labels to avoid an accidental restart. Make the next step deliberately.

Aim for this result

Fill a 4×4 Latin square and satisfy every cage arithmetic target. An attractive position is not enough unless the goal is met. Start with a deliberate move.

How to proceed

  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.

The controls to know

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. Avoid pressing the same control repeatedly while a move is being processed.

Try this example

A two-cell 6× cage contains 2 and 3 in a 1–4 puzzle. Focus on why the action is allowed, not only its outcome. Keep the game’s format in mind.

Keep this in mind

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.

Clarifying the way this game works

For a quick reminder, what is the goal of Calcudoku?

Keep this in mind: Fill a 4×4 Latin square and satisfy every cage arithmetic target.

As a new player, how do I control Calcudoku?

For clarity: 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?

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?

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

While reading the Guide, what format does Calcudoku offer?

Here is the relevant explanation: Twelve puzzles with addition, multiplication, subtraction and singleton cages.

On this playing page, which play mode does Calcudoku use?

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

As a new player, where should I start with Calcudoku?

Select a square and enter 1–4.

For my first round, do I need an account or a payment for Calcudoku?

Keep this in mind: No player account or payment is needed. Game scores are recreational results, not cash prizes.

Before I begin, how can I find Calcudoku again?

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

On this playing page, how do I report an issue with Calcudoku?

For clarity: 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.

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