How to Play Calcudoku

THE PLAYBOOK · SLTPPF

How to play Calcudoku

A round of Calcudoku at SLTPPF begins with understanding the objective. Fill a 4×4 Latin square and satisfy every cage arithmetic target. The learning focus here is build a repeatable approach, supported by the rule notes below.

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

Build a repeatable approach

Try a consistent sequence of observing, choosing and checking the result. Keep the sequence even when the position or challenge changes.

Your goal

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

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.

A useful example

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

Watch out for this

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

Common questions