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RULES & PRACTICE

How to Play Calcudoku

Play Calcudoku ↗

THE PLAYBOOK · DNNINDIA

The essentials of playing Calcudoku

Calcudoku gives you a focused activity to play in your browser. Fill a 4×4 Latin square and satisfy every cage arithmetic target. Keep the game area visible while you use its controls. Check the rule that explains your first action. Use the example below to understand a decision.

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

Take a closer look while playing

Before your first action, say what you are trying to achieve. Then compare the result with the goal. Use the example to check your reasoning.

What counts as success

Fill a 4×4 Latin square and satisfy every cage arithmetic target. An attractive position is not enough unless the goal is met. Review the board or playing area as it changes.

The playing sequence

  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.

Choosing and moving on screen

Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution. On a smaller screen, keep the active part of the board within view. Check any mode label before starting.

One way to understand the rules

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. Take a moment to compare.

A common point of confusion

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

Clarifying the way this game works

On this playing page, what is the goal of Calcudoku?

The key detail is this: Fill a 4×4 Latin square and satisfy every cage arithmetic target.

On this playing page, how do I control Calcudoku?

Keep this in mind: 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?

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

As a new player, what should I watch out for in Calcudoku?

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

When I return, what format does Calcudoku offer?

For clarity: Twelve puzzles with addition, multiplication, subtraction and singleton cages.

For a quick reminder, which play mode does Calcudoku use?

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

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