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Calcudoku

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Logic & numbers
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THE PLAYBOOK · COEYSHOES

Calcudoku: how a round works

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. Begin with the solo mode shown on the page. Check the relevant rule before repeating a move.

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

One thing to notice as you play

Read one step at a time and try it on the playing area. Match the instruction to the control you use. Make the next step deliberately.

What the game asks you to do

Fill a 4×4 Latin square and satisfy every cage arithmetic target. Use the instructions to see which actions move you towards it. Return to the instructions when a step is unclear.

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.

Your inputs

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. Contact us with the game and device if a control does not respond.

Try this example

A two-cell 6× cage contains 2 and 3 in a 1–4 puzzle. Apply the same reasoning to the position in your own round. Consider the next action carefully.

A useful caution

A correct cage total does not permit duplicate digits in a row. Check the rule before repeating the action. Locate the buttons and input area before beginning a long round. Use the on-screen labels to avoid an accidental restart.

Answers about the rules and controls

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

Here is the relevant explanation: Fill a 4×4 Latin square and satisfy every cage arithmetic target.

While learning, 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.

While reading the Guide, 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?

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

For a quick reminder, what format does Calcudoku offer?

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

When I return, 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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