Game guide · XINHENGEST
The Calcudoku playbook
Open Calcudoku, check the instructions and begin a round. 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.
Try a more deliberate round
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. Make the next step deliberately.
Your objective
Fill a 4×4 Latin square and satisfy every cage arithmetic target. Keep that objective in view throughout the round. Try to explain the aim in your own words.
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.
Keyboard and screen controls
Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution. Keep the playing area visible while using these controls. Use the visible help when you are unsure of the next input.
An example before you play
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. Verify the rule before continuing.
A useful caution
A correct cage total does not permit duplicate digits in a row. Compare the situation with the worked example. After a move, check what changed. Decide which rule explains the new state before acting again.
Answers about the rules and controls
While learning, 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?
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.
Before I begin, 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?
For clarity: A correct cage total does not permit duplicate digits in a row.
Before I begin, what format does Calcudoku offer?
For clarity: Twelve puzzles with addition, multiplication, subtraction and singleton cages.
For this browser game, 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.
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 my first round, 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.
On this playing page, 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.