THE PLAYBOOK · YSSDYY
How to play Calcudoku
Use a short break to learn the rhythm of Calcudoku. Fill a 4×4 Latin square and satisfy every cage arithmetic target. Use the example below to understand a decision. Identify the playing area and the controls you need. Use the example below to understand a decision.
Twelve puzzles with addition, multiplication, subtraction and singleton cages.
Focus on one rule
Choose one rule to keep in mind for this round. Apply it consistently rather than guessing what another version might allow. Make the next step deliberately.
Your goal
Fill a 4×4 Latin square and satisfy every cage arithmetic target. The feedback beside the game helps you follow the round. Return to the instructions when a step is unclear.
Step by step
- Select a square and enter 1–4.
- Combine all cage digits using its shown operation.
- Subtraction uses the absolute difference.
- 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. Contact us with the game and device if a control does not respond.
A useful example
A two-cell 6× cage contains 2 and 3 in a 1–4 puzzle. Compare this with the rule that governs the move. 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. Before your first action, say what you are trying to achieve. Then compare the result with the goal.
Common questions
What is the goal of Calcudoku?
The key detail is this: Fill a 4×4 Latin square and satisfy every cage arithmetic target.
As a new player, 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.
What example helps explain Calcudoku?
For clarity: A two-cell 6× cage contains 2 and 3 in a 1–4 puzzle.
When I return, what should I watch out for in Calcudoku?
For clarity: 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.
While reading the Guide, which play mode does Calcudoku use?
Keep this in mind: The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.