Genius Academy / Level 4

LEVEL 4

Naked Pair

Two cells in a house contain the same two candidates.

How to find it

  1. Find two cells with an identical two-digit candidate set.
  2. Confirm both cells share a row, column or box.
  3. Remove both digits from other cells in that house.

Logical demonstration

The violet cells represent the pattern; the gold cell represents the resulting placement or elimination. Verify every highlighted candidate belongs to the required houses before acting.

Common mistakes

  • Using cells that do not share the required row, column, box or peer relationship.
  • Removing a candidate before confirming every occurrence in the pattern.
  • Confusing a possible pattern with a completed logical proof.

Practise the technique

Open a real puzzle, keep candidate notes accurate and ask Genius Coach to identify the next supported logical move.

Practise on a puzzle