Game guide · SQXQKJ
Calcudoku: what to know before playing
Calcudoku gives you a focused activity to play in your browser. Fill a 4×4 Latin square and satisfy every cage arithmetic target. Look at what changes after your first action. Choose a comfortable screen position before beginning. Keep the game area visible while you use its controls.
Twelve puzzles with addition, multiplication, subtraction and singleton cages.
Give this approach a try
Before your first action, say what you are trying to achieve. Then compare the result with the goal. Notice the feedback after each input.
Your goal
Fill a 4×4 Latin square and satisfy every cage arithmetic target. Keep that objective in view throughout the round. Review the board or playing area as it changes.
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.
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. A careful first action helps you become familiar with the layout. Check any mode label before starting.
An example before you play
A two-cell 6× cage contains 2 and 3 in a 1–4 puzzle. Use the example as a guide rather than a substitute for reading your board. Notice the change in the playing area.
A mistake to avoid
A correct cage total does not permit duplicate digits in a row. Check the rule before repeating the action. Compare the worked example with your own position. Use the reasoning, not an answer copied from a different board.
Further help with the game
While reading the Guide, what is the goal of Calcudoku?
Keep this in mind: Fill a 4×4 Latin square and satisfy every cage arithmetic target.
For a quick reminder, how do I control Calcudoku?
Keep this in mind: Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution.
For a quick reminder, 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?
Keep this in mind: A correct cage total does not permit duplicate digits in a row.
What format does Calcudoku offer?
Keep this in mind: Twelve puzzles with addition, multiplication, subtraction and singleton cages.
Which play mode does Calcudoku use?
The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.
As a new player, where should I start with Calcudoku?
For clarity: Select a square and enter 1–4.
Before I begin, do I need an account or a payment for Calcudoku?
No player account or payment is needed. Game scores are recreational results, not cash prizes.
While learning, how can I find Calcudoku again?
For clarity: Use the Games list or save this game page in your browser bookmarks. The Guide is linked from the playing page.
For my first round, how do I report an issue with Calcudoku?
Here is the relevant explanation: 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.