Sudoku Flow
Puzzles / Level Up #14
Level Up

Level Up #14

Three boards, each with one wrong number, from a small 4×4 to a full 9×9. Play every level here, at your own pace.

  • 4Printed with the puzzle
  • 4Filled in by a player

Level 1 · 4×4

Tap the digit you think is wrong.

Show the answer

It's the blue 4 in row 2, column 3. Column 3 already has a printed 4 (row 4, column 3). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 2.

Level 2 · 6×6

Tap the digit you think is wrong.

Show the answer

It's the blue 3 in row 4, column 5. Row 4 already has a printed 3 (row 4, column 2). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 6.

Level 3 · 9×9

Tap the digit you think is wrong.

Show the answer

It's the blue 8 in row 2, column 2. Row 2 already has a printed 8 (row 2, column 8). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 9.

Sudoku app icon

Want more boards like this?

We also make a Sudoku app for iPhone, iPad, Mac and Android. There are no ads in it at all, it works offline, and when you ask for a hint it shows you the technique instead of just filling in a number.

Sudoku Flow is made by Rubigo Games, the developer of the Sudoku app recommended on this site.