Sudoku-Y
SUDOKU · 1–9

Classic.

One cell at a time, at your own pace

Stuck, or just getting started? Let’s practise ↓

No repeats in any row, column or box

Mistakes 0
00:00
Preparing your gameMedium

Use 1–9 to enter numbers
and arrow keys to select a cell

PLAY · NOTICE · TRY

One small move at a time.

Pick a step below. You can try, get it wrong and start again. Your saved game stays here.

  1. Start with one cellCheck a row, a column and a box.
  2. Spot the only choiceTry a Single before peeking at the answer.
  3. Let a pair help youTwo cells, two digits. What can go?
  4. Connect a box and a rowTry both directions, then change a condition.
Try 12 practice topics →Browse all techniques →Which board size should I try? →
A fresh perspective

Start with the row, column or box that has the most numbers
Fewer empty cells can make the next answer easier to spot

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Play free online Sudoku with Sudoku-Y (Sudokuy)

Practice observation and logic on a 9 × 9 Sudoku grid. Choose Easy, Medium, Hard or Expert, try a daily puzzle, add pencil notes and follow step-by-step hints on the board. Play on your phone or computer without an account.

New to Sudoku? Read the rules and beginner Sudoku techniques · Sudoku library