---
title: "Find the Mistake Level Up #14: 3 Sudoku Levels | Sudoku Flow"
description: "Three Sudoku boards, one wrong number in each: a 4×4, a 6×6, then a full 9×9. Level Up #14: play every level and see each answer."
url: https://sudokuflow.com/puzzles/level-up-14/
language: en
---
[Puzzles](https://sudokuflow.com/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.
[Watch on YouTube](https://youtube.com/shorts/k7hCQ2_-Xb0)
## Level 1 · 4×4
Tap the digit you think is wrong.
Level Up #14 · Level 1 · 4×4:
```text
. 2 | 1 .
3 1* | 4* .
------+------
2* 4* | 3 .
1 3* | 4 .
```
Digits marked * were filled in by a player; the others were printed with the puzzle.
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.
Level Up #14 · Level 2 · 6×6:
```text
3* 4 . | 6 1 .
2 1 . | 4* . 5*
---------+---------
4 6 1 | 2 5* .
5* 3 . | 1 3* 4*
---------+---------
6 5* 4* | 3* . 1
. 2* 3 | . 4 .
```
Digits marked * were filled in by a player; the others were printed with the puzzle.
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.
Level Up #14 · Level 3 · 9×9:
```text
3 . . | 7* 4 . | 1 . 6
7 8* 4 | 1* 5 6* | 3* 8 2*
. . 6 | 3* . 8 | 7* . 4
---------+----------+---------
9 3* 7* | . . . | . 6 .
. 6 . | . . 7 | 9* 4 3
4* 1* . | 6* 9 3 | . 2* 7
---------+----------+---------
8 2 3 | . 7 . | 6* . .
5 7 9 | 2* 6* 1 | 4 3 8*
6* 4* 1 | 8 3* 5 | 2 7 9
```
Digits marked * were filled in by a player; the others were printed with the puzzle.
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.
## 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.
[App Store iPhone, iPad, Mac](https://apps.apple.com/app/apple-store/id6502922368?pt=125379530&ct=sudokuflow_web&mt=8) [Google Play Android](https://play.google.com/store/apps/details?id=com.rubigogames.sudoku&referrer=utm_source%3Dsudokuflow%26utm_medium%3Dweb%26utm_campaign%3Dsite)
Sudoku Flow is made by Rubigo Games, the developer of the Sudoku app recommended on this site.