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Solo · FREE PLAY

Calcudoku

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Logic & numbers
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THE PLAYBOOK · SWEETTONG

How to play Calcudoku

Choose a round of Calcudoku and settle into its rules. Fill a 4×4 Latin square and satisfy every cage arithmetic target. Choose a clear next step rather than rushing through the instructions. Make your first input carefully and watch the result. Check the relevant rule before repeating a move.

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

Build a steady rhythm

Take enough time to read a new position. If a game has a timer, learn its controls first rather than searching for them during the round. Refer to the controls when needed.

Your goal

Fill a 4×4 Latin square and satisfy every cage arithmetic target. The feedback beside the game helps you follow the round. Take a moment to understand the current position.

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.

Controls

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. A new-round button replaces the current round.

A useful 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. Notice the change in the playing area.

Watch out for this

A correct cage total does not permit duplicate digits in a row. Read the feedback to see why an action did not have the expected result. Keep the stated aim separate from side details such as animation or appearance. Progress is measured by the game’s own completion or scoring rules.

Common questions

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

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

For a quick reminder, 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 this browser game, what example helps explain Calcudoku?

The key detail is this: 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?

Here is the relevant explanation: A correct cage total does not permit duplicate digits in a row.

On this playing page, what format does Calcudoku offer?

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

For this browser game, 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.

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