Game technique · Kakuro
Sum Combinations in Kakuro
For each run, list distinct digits that add up to its clue, then use crossing runs to remove impossible combinations.
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For each run, list distinct digits that add up to its clue, then use crossing runs to remove impossible combinations.
Example
A two-cell run summing to 3 must contain 1 and 2 in some order. A crossing clue decides which cell gets which digit.
Key point
For each run, list distinct digits that add up to its clue, then use crossing runs to remove impossible combinations.