Classic Sudoku

Easy Sudoku

Play free Easy Sudoku online. Every Easy puzzle here can be finished with naked singles alone: at each step there is a cell with only one digit left.

30,000+ puzzles24 to 40 cluesOne solution each
8
3
7
1
4
3
4
8
7
5
4
5
1
8
4
7
9
9
5
7
2
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1
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5
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7
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1
An Easy puzzle from our collection, 36 clues

What makes a Sudoku Easy here

Every puzzle on Sudoku Challenge is solved by our grader step by step, the way a careful person would: at each step it uses the simplest technique that works. A puzzle's level is the hardest group of techniques it cannot be finished without.

Easynaked singles only: every step is a cell with one possible digit.
Mediumadds hidden singles (a digit with one possible cell in a row, column or box) and locked candidates.
Hardadds pairs, triples and quads, naked and hidden, the unique rectangle and BUG+1.
Extremeneeds at least one advanced pattern, such as the X-Wing, XY-Wing, Skyscraper or Swordfish.
Diabolicalneeds the longest chains and largest patterns our solver knows, such as the XY-Chain, Jellyfish or ALS-XZ.

So an Easy puzzle never needs more than naked singles: there is always a cell where only one digit fits. Its score sits between 100 and 999 points, shown before you start.

Our Easy puzzles have 24 to 40 clues, 36 on average: more than any other level, so the first cells fill quickly.

The techniques you need

Easy needs one technique, Naked Single. How often our grader used it across our 30,000+ Easy puzzles:

TechniqueEasy puzzles using it
Naked Singleevery one

Counted October 2026 over every puzzle on the site. More in Sudoku by the Numbers.

How to solve an Easy Sudoku

  1. Start with a row, column or box that is nearly full, and see which digits are missing.
  2. For an empty cell, rule out every digit already in its row, column and box. If only one is left, write it in: that is a naked single.
  3. Each digit you place rules out more in its row, column and box, so look next to it for the next one.
  4. Pencil marks help: note the digits each cell can still hold, and look for a cell with one left.
  5. No guessing is ever needed: when you are stuck, look again for a cell with only one possible digit.

Easy puzzles across the site

Play EasyAn unlimited supply in Classic, with candidates, Next Step hints and undo.The daily practiceAn Easy puzzle every day, the same for everyone, to replay with every tool.TournamentsRace other players on the same Easy puzzles for 15 minutes to an hour.DuelsOne opponent, the same Easy puzzle, the same clock.Printable Easy SudokuPacks of 12 to print, with the answers on the last page.Learn the techniquesEvery technique above, step by step, with real examples.
The other levels:Medium SudokuHard SudokuExtreme SudokuDiabolical Sudoku

Questions about Easy Sudoku

What makes a Sudoku easy?

The techniques it needs, not the number of clues. An Easy puzzle here can be finished with naked singles alone: at every step at least one cell has only one possible digit. Our grader checks every puzzle step by step to place it.

Is Easy Sudoku good for beginners?

Yes. It practises the rule every technique builds on: each digit appears once in every row, column and box. When Easy feels quick, Medium adds hidden singles and locked candidates.

How many clues does an easy Sudoku have?

Our Easy puzzles have between 24 and 40 clues, 36 on average, more than our other levels.

Can I play Easy Sudoku against other players?

Yes. Tournaments and duels can be played at Easy, and the daily practice has an Easy puzzle every day, the same for everyone.