Intermediate upgrade
Naked Pairs Sudoku Strategy: Examples, Triples, and Practice
A naked pair appears when two cells in the same row, column, or box contain only the same two candidates. Those digits are locked in those cells, so every other cell in that unit can lose them. Learn the pattern, then play Sudoku online and test it on a fresh board with notes.
Identify naked sets in 4 steps
- Scan a row, column, or box for repeated candidate groups.
- If two cells contain the same two candidates, strike those digits from the rest of the unit.
- Apply the same logic to triples (three cells, three numbers) and quads.
- Re-scan for fresh hidden singles or pointing moves triggered by the eliminations.
Candidate highlighting in Pure Sudoku makes this faster: type notes, tap a digit, and watch where it appears in the unit. Anything outside the naked set is gone instantly.
Interactive play-by-play
Watch naked pairs clear a column
Follow the animation to see how matching candidates fence off a column and unlock a clean single.
Step 1
Spot the repeated pair
Column 2 has the exact same candidates (2 and 8) in two cells. That locks those digits into that column.
Step 2
Delete blocked candidates
Every other cell in the column loses 2 and 8 instantly. The bottom cell collapses to a single 4.
Step 3
Finish the column with certainty
With 4 placed, each partner in the pair resolves. No guesswork, just fast eliminations.
Step 1 of 3
Sample drill for medium boards
- Open the daily medium puzzle.
- Limit yourself to naked sets until at least five numbers are placed.
- Switch to pointing & claiming once the board loosens up.
Track how many eliminations each technique delivers. If the board stalls, start a fresh Sudoku game and repeat the scan one row, column, or box at a time.
Pair naked sets with these tactics
- Sudoku solving strategies for the full beginner-to-advanced order.
- Hidden singles to finish easy puzzles without mistakes.
- X-Wing once rows and columns start mirroring candidates.
- XY-Wing to punish overstuffed pencil marks.
Naked Pairs Sudoku FAQ
What is a naked pair in Sudoku?
A naked pair is two cells in the same row, column, or 3x3 box that contain only the same two candidates. Since those two digits must fill those two cells, you can remove them from the rest of that unit.
How is a naked triple different from a naked pair?
A naked triple uses three cells that together contain only three candidates. The cells do not all need the exact same notes, but the combined candidate set must be limited to three digits.
When should I look for naked pairs?
Look after obvious singles slow down and your notes are mostly complete. Naked pairs clean crowded candidate lists and often reveal new singles or pointing moves.
Can I practice naked pairs online?
Yes. Start a fresh Sudoku game, turn on notes, and scan one unit at a time for repeated candidate pairs before moving to triples and quads.