Game guide · GDFCWJ
Rules, controls and help for Calcudoku
Choose a round of Calcudoku and settle into its rules. 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. Choose a clear next step rather than rushing through the instructions.
Twelve puzzles with addition, multiplication, subtraction and singleton cages.
Take a closer look while playing
When a decision goes wrong, compare it with the common mistake described below. Start again only when you intend to leave the current round. Keep the objective visible.
Aim for this result
Fill a 4×4 Latin square and satisfy every cage arithmetic target. The feedback beside the game helps you follow the round. The example below illustrates a decision.
From the start of a round
- 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.
The controls to know
Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution. A careful first action helps you become familiar with the layout. Return to the rules if the result is unexpected.
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. Look for the relevant detail.
Notice this detail
A correct cage total does not permit duplicate digits in a row. Read the feedback to see why an action did not have the expected result. Keep the stated aim separate from side details such as animation or appearance. Progress is measured by the game’s own completion or scoring rules.
Answers about the rules and controls
While learning, what is the goal of Calcudoku?
The key detail is this: Fill a 4×4 Latin square and satisfy every cage arithmetic target.
On this playing page, how do I control Calcudoku?
Here is the relevant explanation: Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution.
While learning, 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 learning, 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.
As a new player, what format does Calcudoku offer?
Twelve puzzles with addition, multiplication, subtraction and singleton cages.
On this playing page, which play mode does Calcudoku use?
Here is the relevant explanation: 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?
Keep this in mind: Select a square and enter 1–4.
For my first round, 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.
As a new player, 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.
How do I report an issue with Calcudoku?
Keep this in mind: 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.