Game guide · FJZHENSEN
Rules, controls and help for Calcudoku
Bring your attention to one round of Calcudoku. Fill a 4×4 Latin square and satisfy every cage arithmetic target. Check the relevant rule before repeating a move. Choose a comfortable screen position before beginning. Use the example below to understand a decision.
Twelve puzzles with addition, multiplication, subtraction and singleton cages.
Build familiarity through play
Watch the feedback after an action. A message can explain whether the input was accepted or whether a rule needs attention. Notice the feedback after each input.
The challenge in front of you
Fill a 4×4 Latin square and satisfy every cage arithmetic target. The feedback beside the game helps you follow the round. Follow this game’s rules rather than another version’s.
A walkthrough of the rules
- 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.
How your actions work
Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution. Read a button’s label before selecting it. Look at the feedback after the action.
Put the rules into context
A two-cell 6× cage contains 2 and 3 in a 1–4 puzzle. Compare this with the rule that governs the move. Choose a deliberate next step.
Pay attention to this rule
A correct cage total does not permit duplicate digits in a row. Compare the situation with the worked example. Choose one rule to keep in mind for this round. Apply it consistently rather than guessing what another version might allow.
Answers about the rules and controls
What is the goal of Calcudoku?
The key detail is this: Fill a 4×4 Latin square and satisfy every cage arithmetic target.
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.
For this browser game, what example helps explain Calcudoku?
A two-cell 6× cage contains 2 and 3 in a 1–4 puzzle.
While learning, what should I watch out for in Calcudoku?
Keep this in mind: A correct cage total does not permit duplicate digits in a row.
While learning, what format does Calcudoku offer?
The key detail is this: Twelve puzzles with addition, multiplication, subtraction and singleton cages.
On this playing page, 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.
When I return, where should I start with Calcudoku?
For clarity: Select a square and enter 1–4.
When I return, do I need an account or a payment for Calcudoku?
Keep this in mind: No player account or payment is needed. Game scores are recreational results, not cash prizes.
For a quick reminder, how can I find Calcudoku again?
The key detail is this: Use the Games list or save this game page in your browser bookmarks. The Guide is linked from the playing page.
Before I begin, how do I report an issue with Calcudoku?
Use the contact form and include the game name, browser, device and the actions that led to the issue. Do not send passwords or payment details.