Kakuro
Fill each run with different digits from 1 to 9 to make its clue total. Crossing runs share a digit.
Example
Example
These two runs cross in the highlighted square. Which digit can both sums share?
Choose a number to try it.
Compare combinations in two- to four-square runs.
0 of 4 solved on this device
1 puzzle · No time limit
One answer, reached by reasoning alone. No guessing.
Explore the method
Learn the kakuro sums that allow only one set of digits, and how a crossing run picks the digit for the cell two runs share.
On by default unless you turn it off. Saved choices are kept. Shares starts, completions, replays and error categories. For ChatGPT visits, starts and completions may include the first QuickenBrain page and country. No answers, drawings or names.
How this data is usedHelp
Fill each run with different digits from 1 to 9 to make its clue total. Crossing runs share a digit.
Choose a difficulty, then select Start. Hints first show where to look. You decide whether to reveal the reasoning or apply a step. Undo and redo let you revise your work.
Saved on this device
About this practice
Learn a method
Start where two runs crossFill each run with different digits from 1 to 9 to make its clue total. Crossing runs share a digit.
Report a problem
On by default unless you turn it off. Saved choices are kept. Shares starts, completions, replays and error categories. For ChatGPT visits, starts and completions may include the first QuickenBrain page and country. No answers, drawings or names.
How this data is used