Puzzle Games
How to play Kakuro
Fill number runs so they reach the clue sum without repeating digits within a run.
QUICK ANSWER
How do you play Kakuro?
List possible non-repeating combinations for constrained sums, then use crossing cells to eliminate candidates. Resolve the full result of that action before the next player begins. Continue in order while keeping pieces, scores, resources, or progress visible. Finish when every white cell contains a digit and every run matches its clue with no duplicate digit.
Jump to the step-by-step rules ↓EDITOR'S TABLE NOTES
Is Kakuro a good fit for your group?
This game works especially well for solo players or groups that enjoy patient observation and gradual progress; the listed 1-player range and 10–60 min playing time should also fit the group. Before setting up, decide whether that matches the experience your group wants today.
Rules version covered here
This guide covers the standard solving method rather than one publisher's puzzle. Difficulty and permitted aids depend on the specific puzzle in front of you. For Kakuro, pay particular attention to the stated setup and ending condition below.
QUICK VIDEO GUIDE
Learn Kakuro in under a minute
About this video
This original mini lesson covers what you need, setup, normal play, the winning condition, and one beginner tip. Continue below for the complete written guide.
INTERACTIVE LEARN-TO-PLAY
Practice Kakuro before the first round
Walk through the setup, try a sample turn, and get a quick answer when play stalls.
Review the 1–9 digit rule and identify every horizontal and vertical sum run.
Confirm the starting player, turn direction, and the exact ending condition for Kakuro.
Playable example turn
Step 1 of 4
List possible non-repeating combinations for constrained sums, then use crossing cells to eliminate candidates.
What should we do now?
Start with this action: List possible non-repeating combinations for constrained sums, then use crossing cells to eliminate candidates.
Scoring and winning
Finish when every white cell contains a digit and every run matches its clue with no duplicate digit.
Common dispute to prevent
Using the same digit twice in one run even when the arithmetic sum is correct. Agree on any edition-specific variation before the first turn.
The objective
Your goal is to fill number runs so they reach the clue sum without repeating digits within a run. Before play begins, make sure every player can explain how the game ends and what determines the winner. That one check prevents many mid-game disagreements.
What you need
A Kakuro puzzle and pencil or digital app. Lay out every required item before teaching the rules. If pieces, cards, controllers, or play space are missing, resolve that before the practice turn.
How to set up
- Review the 1–9 digit rule and identify every horizontal and vertical sum run.
- Confirm the starting player, turn direction, and the exact ending condition for Kakuro.
Setup check: Ask one player who did not arrange the game to compare the table, field, or screen with these steps. A fresh look often catches an incorrect starting position.
How to play: step by step
- List possible non-repeating combinations for constrained sums, then use crossing cells to eliminate candidates.
- Resolve the full result of that action before the next player begins.
- Continue in order while keeping pieces, scores, resources, or progress visible.
- Finish when every white cell contains a digit and every run matches its clue with no duplicate digit.
Example first round
A useful first-round walkthrough for Kakuro begins this way: List possible non-repeating combinations for constrained sums, then use crossing cells to eliminate candidates. Next, resolve the full result of that action before the next player begins. Continue in normal turn order until the ending condition applies: finish when every white cell contains a digit and every run matches its clue with no duplicate digit.
How scoring and winning work
- The result is determined by the guide's stated objective: Fill number runs so they reach the clue sum without repeating digits within a run.
- The final step explains when play stops: Finish when every white cell contains a digit and every run matches its clue with no duplicate digit.
- For the most common rules question, use this clarification consistently: The sum combination matters first; crossings determine which digit belongs in each position.
Useful variations
- Set a relaxed time limit or divide the puzzle into sections when several people want to contribute.
- For a shorter session, announce a stopping time before starting; 10–60 min is the normal planning range for Kakuro.
- When playing with beginners, demonstrate this strategy before scoring begins: Memorize extreme combinations such as two cells totaling 3 or 17 because they have only one digit pair.
Beginner strategies
- Memorize extreme combinations such as two cells totaling 3 or 17 because they have only one digit pair.
- After each round, identify which decision created the strongest position and test that lesson in the next game.
Choose one of these ideas for the first game instead of trying to remember every strategy at once. Afterward, identify one decision that changed the result and one move you would test next time.
Common mistakes to avoid
- Using the same digit twice in one run even when the arithmetic sum is correct.
- Mixing rules from another edition or a familiar house version without telling the other players.
If an illegal move is discovered, pause and agree on the least disruptive correction. For casual play, consistency and a shared understanding matter more than reconstructing many turns.
Frequently asked questions
Does digit order matter?
The sum combination matters first; crossings determine which digit belongs in each position.
What is the best way to teach Kakuro?
Explain the objective, demonstrate one normal turn, and let everyone try a no-pressure practice turn before scoring.
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