---
title: "Mistake Rush #3: 5 Sudoku Boards, 5 Mistakes | Sudoku Flow"
description: "Five small Sudoku boards, one wrong number in each. Mistake Rush #3: count how many you find, then check every answer."
url: https://sudokuflow.com/puzzles/mistake-rush-3/
language: en
---
[Puzzles](https://sudokuflow.com/puzzles/) / Mistake Rush #3
Mistake Rush
# Mistake Rush #3
Five small boards, one wrong number in each. In the video you get a few seconds per board; here you can take your time.
[Watch on YouTube](https://youtube.com/shorts/9cllpMLZEPQ)
## Board 1 · 4×4
Tap the digit you think is wrong.
Mistake Rush #3 · Board 1 · 4×4:
```text
. 3 | 4 2*
4 . | . 1*
------+------
3 1 | 3* 4*
. 4* | 1 .
```
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 3, column 3. Row 3 already has a printed 3 (row 3, column 1). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 2.
## Board 2 · 4×4
Tap the digit you think is wrong.
Mistake Rush #3 · Board 2 · 4×4:
```text
. 4* | 2* .
2 1 | 4* 3
------+------
. 3* | 2 4
. . | 3 1*
```
Digits marked * were filled in by a player; the others were printed with the puzzle.
Show the answer
It's the blue 2 in row 1, column 3. Column 3 already has a printed 2 (row 3, column 3). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 1.
## Board 3 · 6×6
Tap the digit you think is wrong.
Mistake Rush #3 · Board 3 · 6×6:
```text
2* 3 1 | . 6 4
6* 5* 4 | 3 2* .
---------+---------
. 6* 2 | 6 3 5
5* . . | . 4 .
---------+---------
4 1* 6* | 2* . 3
3 . . | 4* 1 6*
```
Digits marked * were filled in by a player; the others were printed with the puzzle.
Show the answer
It's the blue 6 in row 3, column 2. Row 3 already has a printed 6 (row 3, column 4). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 4.
## Board 4 · 6×6
Tap the digit you think is wrong.
Mistake Rush #3 · Board 4 · 6×6:
```text
3 5* . | 4 6 1*
4 . 1 | . 2 5*
---------+---------
. . . | 5 3* 6*
. . 6* | 1 4* 2*
---------+---------
. 5 4 | 2 1 .
2 1 3* | 6* 5* 4
```
Digits marked * were filled in by a player; the others were printed with the puzzle.
Show the answer
It's the blue 5 in row 1, column 2. Column 2 already has a printed 5 (row 5, column 2). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 2.
## Board 5 · 6×6
Tap the digit you think is wrong.
Mistake Rush #3 · Board 5 · 6×6:
```text
2* 6 . | . 3 .
. 3 1* | 4 . .
---------+---------
3 4* 5 | 3* . 2
1 2* 6* | . 5 4
---------+---------
4* 1 . | 5* 6 3*
6 5* 3 | 2 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 3, column 4. Row 3 already has a printed 3 (row 3, column 1). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 6.
## 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.