Kakuro

THE PLAYBOOK · QTHCC

How to play Kakuro

Use QTHCC to play Kakuro and read its instructions on the same page. Complete a 4×4 sum grid with digits 1–9, no repeats in any row or column, and the displayed totals. Follow the review the result approach for your next round.

Twelve teaching sum-grid puzzles. This is not a full blocked-grid newspaper Kakuro layout.

Review the result

When a round finishes, compare what happened with the winning or scoring condition. Use that comparison to choose a better approach next time.

Your goal

Complete a 4×4 sum grid with digits 1–9, no repeats in any row or column, and the displayed totals.

Step by step

1. Compare a row total with its fixed entries.
2. Use the column total for the same blank.
3. Enter digits 1–9.
4. Check puzzle verifies totals and non-repetition.

Controls

Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution.

A useful example

A row total 18 with fixed values 2, 4 and 7 requires 5 in the remaining cell.

Watch out for this

Repeated digits in a run are forbidden even when the sum matches.

Common questions