Game guide · VISITPHONE
Learn your way around Calcudoku
Choose a round of Calcudoku and settle into its rules. Fill a 4×4 Latin square and satisfy every cage arithmetic target. Keep the game area visible while you use its controls. 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.
Build familiarity through play
When a decision goes wrong, compare it with the common mistake described below. Start again only when you intend to leave the current round. Use the example to check your reasoning.
What counts as success
Fill a 4×4 Latin square and satisfy every cage arithmetic target. Use the instructions to see which actions move you towards it. Notice how the game responds to your input.
The order of 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. Read a button’s label before selecting it. Use the visible help when you are unsure of the next input.
Put the rules into context
A two-cell 6× cage contains 2 and 3 in a 1–4 puzzle. Apply the same reasoning to the position in your own round. Look for the relevant detail.
An important reminder
A correct cage total does not permit duplicate digits in a row. Compare the situation with the worked example. 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.
If you are unsure
When I return, what is the goal of Calcudoku?
Fill a 4×4 Latin square and satisfy every cage arithmetic target.
As a new player, 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?
For clarity: A two-cell 6× cage contains 2 and 3 in a 1–4 puzzle.
For this browser game, 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.
While learning, what format does Calcudoku offer?
The key detail is this: Twelve puzzles with addition, multiplication, subtraction and singleton cages.
While learning, 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.
While reading the Guide, where should I start with Calcudoku?
For clarity: Select a square and enter 1–4.
For a quick reminder, 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.
Before I begin, how can I find Calcudoku again?
Use the Games list or save this game page in your browser bookmarks. The Guide is linked from the playing page.
When I return, 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.
