Game guide · ITCGT
Kakuro: what to know before playing
Take a moment with Kakuro before moving to another game. Complete a 4×4 sum grid with digits 1–9, no repeats in any row or column, and the displayed totals. Use the example below to understand a decision. Check the rule that explains your first action. Look at what changes after your first action.
Practise sums on twelve small, unblocked 4×4 grids. These teaching boards use whole-row and whole-column totals rather than the blocked runs of classic Kakuro.
A small practice goal
Before your first action, say what you are trying to achieve. Then compare the result with the goal. Make the next step deliberately.
Aim for this result
Complete a 4×4 sum grid with digits 1–9, no repeats in any row or column, and the displayed totals. The feedback beside the game helps you follow the round. The example below illustrates a decision.
A walkthrough of the rules
- Compare a row total with its fixed entries.
- Use the column total for the same blank.
- Enter digits 1–9.
- Check puzzle verifies totals and non-repetition.
Making selections and moves
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. Use the visible help when you are unsure of the next input.
See the idea in action
A row total 18 with fixed values 2, 4 and 7 requires 5 in the remaining cell. Compare this with the rule that governs the move. Keep the game’s format in mind.
A common point of confusion
Repeated digits in a run are forbidden even when the sum matches. A different version of the game may use a different rule. Watch the feedback after an action. A message can explain whether the input was accepted or whether a rule needs attention.
Clarifying the way this game works
When I return, what is the goal of Kakuro?
Keep this in mind: Complete a 4×4 sum grid with digits 1–9, no repeats in any row or column, and the displayed totals.
How do I control Kakuro?
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.
While reading the Guide, what example helps explain Kakuro?
Keep this in mind: A row total 18 with fixed values 2, 4 and 7 requires 5 in the remaining cell.
While learning, what should I watch out for in Kakuro?
Keep this in mind: Repeated digits in a run are forbidden even when the sum matches.
Before I begin, what format does Kakuro offer?
The key detail is this: Practise sums on twelve small, unblocked 4×4 grids. These teaching boards use whole-row and whole-column totals rather than the blocked runs of classic Kakuro.
For my first round, which play mode does Kakuro 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.
Before I begin, where should I start with Kakuro?
Compare a row total with its fixed entries.
Do I need an account or a payment for Kakuro?
Here is the relevant explanation: No player account or payment is needed. Game scores are recreational results, not cash prizes.
As a new player, how can I find Kakuro again?
Here is the relevant explanation: 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 Kakuro?
For clarity: 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.