Naked Pair Walkthrough

A Naked Pair is two cells in the same unit that hold the same two candidates and nothing else. Those two digits are locked into those cells, so they can be removed from every other cell in the unit.

Sudoku board with pencil-mark candidates before applying the Naked Pair technique — Before — candidates pencilled in. There is a Naked Pair in Column 3.

There is a Naked Pair in Column 3. Applying the Naked Pair eliminates 3 candidates (struck out in red below; any solved cells shown in green).

The same Sudoku board after the Naked Pair technique eliminates 3 candidates — After applying the Naked Pair.

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