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WFMMGS

RULES & PRACTICE

How to Play Calcudoku

Play Calcudoku ↗

Game guide · WFMMGS

Making your first moves in Calcudoku

Bring your attention to one round of Calcudoku. 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

Choose one rule to keep in mind for this round. Apply it consistently rather than guessing what another version might allow. Notice the feedback after each input.

Your goal

Fill a 4×4 Latin square and satisfy every cage arithmetic target. Keep that objective in view throughout the round. Take a moment to understand the current position.

The order of play

  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 your actions work

Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution. A careful first action helps you become familiar with the layout. Make sure you are interacting with the game rather than the surrounding page.

A closer look at one example

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.

Watch out for this

A correct cage total does not permit duplicate digits in a row. Compare the situation with the worked example. Compare the worked example with your own position. Use the reasoning, not an answer copied from a different board.

Common questions

While reading the Guide, what is the goal of Calcudoku?

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

How do I control Calcudoku?

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

As a new player, what example helps explain Calcudoku?

Keep this in mind: A two-cell 6× cage contains 2 and 3 in a 1–4 puzzle.

Before I begin, 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.

As a new player, 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.

Before I begin, where should I start with Calcudoku?

Keep this in mind: Select a square and enter 1–4.

Before I begin, do I need an account or a payment for Calcudoku?

No player account or payment is needed. Game scores are recreational results, not cash prizes.

How can I find Calcudoku again?

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

While reading the Guide, 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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