THE PLAYBOOK · CDBRM
How to play Calcudoku
Calcudoku gives you a focused activity to play in your browser. Fill a 4×4 Latin square and satisfy every cage arithmetic target. Choose a clear next step rather than rushing through the instructions. Use the opening round to become familiar with the layout. Keep the game area visible while you use its controls.
Twelve puzzles with addition, multiplication, subtraction and singleton cages.
Review a difficult moment
When a decision goes wrong, compare it with the common mistake described below. Start again only when you intend to leave the current round. Refer to the controls when needed.
Your goal
Fill a 4×4 Latin square and satisfy every cage arithmetic target. Keep that objective in view throughout the round. Keep the controls in easy reach.
Step by step
- 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.
Controls
Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution. Use the control method described here for this activity. Contact us with the game and device if a control does not respond.
A useful example
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. Keep the controls nearby.
Watch out for this
A correct cage total does not permit duplicate digits in a row. A different version of the game may use a different rule. Locate the buttons and input area before beginning a long round. Use the on-screen labels to avoid an accidental restart.
Common questions
When I return, 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.
Before I begin, what example helps explain Calcudoku?
A two-cell 6× cage contains 2 and 3 in a 1–4 puzzle.
Before I begin, 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.
On this playing page, what format does Calcudoku offer?
Here is the relevant explanation: Twelve puzzles with addition, multiplication, subtraction and singleton cages.
For my first round, 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.