Naked Pair
Medium
Used by Smart Hint
Two cells in a unit share the exact same two candidates — those digits can be removed from every other cell in the unit.
- Cells that establish the pattern
- Where the conclusion lands
- Candidate ruled out
How it works
- A3 and C3 both have exactly the same two candidates: {1, 4}. Neither cell can hold anything else.
- Between them, they'll take both 1 and 4 — so those digits are safe to remove from every other cell in row 3, like E3.