How to Play Sudoku

Master the one rule, then practice with coach-style hints.

The one rule

Welcome! Sudoku has one rule: every row, column, and 3×3 box contains the digits 1-9 exactly once.

Sudoku rules: every row, column, and 3×3 box contains 1-9 5 3 4 6 7 8 9 1 2 6 7 2 1 9 5 3 4 8 1 9 8 3 4 2 5 6 7 8 5 9 7 6 1 4 2 3 4 2 6 8 5 3 7 9 1 7 1 3 9 2 4 8 5 6 9 6 1 5 3 7 2 8 4 2 8 7 4 1 9 6 3 5 3 4 5 2 8 6 1 7 9
Every row, every column, and every 3×3 box must contain the digits 1–9 exactly once.

The rules are simple

Each 3×3 box must contain 1-9. Finish the box.

Rows work the same way

Each row must contain 1-9. Finish the row.

Columns too

Each column must contain 1-9. Finish the column.

Step by step

  1. Welcome! Sudoku has one rule: every row, column, and 3×3 box contains the digits 1-9 exactly once.
  2. First, selecting a cell: tap the highlighted cell on the board.
  3. Look at its row, column, and box: only one digit is missing. Tap it on the number pad below.
  4. When unsure, use pencil marks: turn on Pencil, select the highlighted cell, and tap a digit to jot it down.
  5. Once sure, turn Pencil off and place the real answer.
  6. The rest is yours! If you get stuck, tap Hint and the coach will walk you through it.

Well done!

You know the basics now

Every row, column and box needs 1-9. Now finish the whole puzzle!

You got it! Try an easy puzzle now

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