Naked Single Practice Puzzles

A Naked Single is a cell that has exactly one candidate left after you remove every digit already present in its row, column, and box. That remaining digit must go in the cell.

Every puzzle below is verified to feature the Naked Single as its hardest required technique — of the 65,284 puzzles in our library, 65,284 require it and 1,182 need nothing harder. New to the pattern? Learn the Naked Single or see a worked example first.

Curated Naked Single puzzles

  1. Practice puzzle #1 — 24 givens · needs Naked Single
  2. Practice puzzle #2 — 25 givens · needs Naked Single
  3. Practice puzzle #3 — 24 givens · needs Naked Single
  4. Practice puzzle #4 — 26 givens · needs Naked Single
  5. Practice puzzle #5 — 24 givens · needs Naked Single
  6. Practice puzzle #6 — 25 givens · needs Naked Single
  7. Practice puzzle #7 — 23 givens · needs Naked Single
  8. Practice puzzle #8 — 25 givens · needs Naked Single
  9. Practice puzzle #9 — 23 givens · needs Naked Single
  10. Practice puzzle #10 — 24 givens · needs Naked Single
  11. Practice puzzle #11 — 26 givens · needs Naked Single
  12. Practice puzzle #12 — 23 givens · needs Naked Single
Get a fresh Naked Single puzzle →

Naked Single practice FAQ

How many Sudoku puzzles require the Naked Single technique?
Of the 65,284 puzzles in the Precision Sudoku library, 65,284 require the Naked Single to solve, and 1,182 can be completed with nothing harder than the Naked Single. Every puzzle is verified by a solver that records the exact techniques needed.
What is the best way to practice the Naked Single?
Play puzzles where the Naked Single is the hardest move required, so every sticking point is an opportunity to apply it. It is the most basic move and the first thing to look for after every placement, because solving one cell often creates the next Naked Single.
Can I play a Sudoku puzzle that needs exactly the Naked Single?
Yes. The curated puzzles on this page all feature the Naked Single as their most advanced required technique, and the practice button serves a fresh puzzle from the same verified pool whenever you want another.