Game guide · 2COPE
A practical guide to Calcudoku
Calcudoku gives you a focused activity to play in your browser. 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.
Practice beyond the first move
Before your first action, say what you are trying to achieve. Then compare the result with the goal. Refer to the controls when needed.
The goal to keep in mind
Fill a 4×4 Latin square and satisfy every cage arithmetic target. An attractive position is not enough unless the goal is met. Keep the controls in easy reach.
How to proceed
- 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.
Getting comfortable with the controls
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. Use one clear input at a time.
See how the rules apply
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. Keep the controls nearby.
A mistake to avoid
A correct cage total does not permit duplicate digits in a row. Check the rule before repeating the action. Before your first action, say what you are trying to achieve. Then compare the result with the goal.
Helpful answers for players
For a quick reminder, what is the goal of Calcudoku?
Here is the relevant explanation: Fill a 4×4 Latin square and satisfy every cage arithmetic target.
How do I control Calcudoku?
The key detail is this: 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.
As a new player, what should I watch out for in Calcudoku?
The key detail is this: A correct cage total does not permit duplicate digits in a row.
For a quick reminder, what format does Calcudoku offer?
Here is the relevant explanation: Twelve puzzles with addition, multiplication, subtraction and singleton cages.
While reading the Guide, 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.
While learning, where should I start with Calcudoku?
Here is the relevant explanation: Select a square and enter 1–4.
Do I need an account or a payment for Calcudoku?
For clarity: No player account or payment is needed. Game scores are recreational results, not cash prizes.
While reading the Guide, 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.
As a new player, 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.