Sudoku FlowLevel Up #1
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 3 in row 4, column 4. Row 4 already has a printed 3 (row 4, column 1). 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 4 in row 4, column 6. Column 6 already has a printed 4 (row 1, column 6). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 5.
Level 3 · 9×9
Tap the digit you think is wrong.
Show the answer
It's the blue 7 in row 2, column 6. Column 6 already has a printed 7 (row 8, column 6). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 2.
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.