THE PLAYBOOK · SOLOHB
Calcudoku: a guide for your next round
Try Calcudoku at your own pace and keep its objective in view. Fill a 4×4 Latin square and satisfy every cage arithmetic target. Choose a clear next step rather than rushing through the instructions. Choose a comfortable screen position before beginning. Check the relevant rule before repeating a move.
Twelve puzzles with addition, multiplication, subtraction and singleton cages.
Practice with a purpose
Compare the worked example with your own position. Use the reasoning, not an answer copied from a different board. Keep the objective visible.
Aim for this result
Fill a 4×4 Latin square and satisfy every cage arithmetic target. Use the instructions to see which actions move you towards it. Follow this game’s rules rather than another version’s.
The steps to play
- 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.
Input guidance
Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution. Keep the playing area visible while using these controls. Use one clear input at a time.
An example to follow
A two-cell 6× cage contains 2 and 3 in a 1–4 puzzle. Focus on why the action is allowed, not only its outcome. Notice the change in the playing area.
A common point of confusion
A correct cage total does not permit duplicate digits in a row. Compare the situation with the worked example. After a move, check what changed. Decide which rule explains the new state before acting again.
Questions about this game
For my first round, what is the goal of Calcudoku?
Here is the relevant explanation: Fill a 4×4 Latin square and satisfy every cage arithmetic target.
While reading the Guide, how do I control Calcudoku?
For clarity: Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution.
When I return, what example helps explain Calcudoku?
Here is the relevant explanation: 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?
Here is the relevant explanation: A correct cage total does not permit duplicate digits in a row.
Before I begin, what format does Calcudoku offer?
Keep this in mind: Twelve puzzles with addition, multiplication, subtraction and singleton cages.
On this playing page, 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.