---
title: "Mistake Rush #8: 5 Sudoku Boards, 5 Mistakes | Sudoku Flow"
description: "Five small Sudoku boards, one wrong number in each. Mistake Rush #8: count how many you find, then check every answer."
url: https://sudokuflow.com/puzzles/mistake-rush-8/
language: en
---
[Puzzles](https://sudokuflow.com/puzzles/) / Mistake Rush #8
Mistake Rush
# Mistake Rush #8
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/OkTnfyw0XmM)
## Board 1 · 4×4
Tap the digit you think is wrong.
Mistake Rush #8 · Board 1 · 4×4:
```text
4* 1* | 2 3
3 . | 4 1
------+------
1* 4* | . .
. . | 1 3*
```
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 4. Column 4 already has a printed 3 (row 1, column 4). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 4.
## Board 2 · 4×4
Tap the digit you think is wrong.
Mistake Rush #8 · Board 2 · 4×4:
```text
. 3 | . 4*
1* 4* | 1 .
------+------
4 2 | 3* .
. 1* | 4 2
```
Digits marked * were filled in by a player; the others were printed with the puzzle.
Show the answer
It's the blue 1 in row 2, column 1. Row 2 already has a printed 1 (row 2, column 3). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 2.
## Board 3 · 6×6
Tap the digit you think is wrong.
Mistake Rush #8 · Board 3 · 6×6:
```text
1* 3* . | 5* . 6
6* 4 5 | 1 . 2
---------+---------
4 2* 1 | 6* 5* 3*
3 5 6 | 4 . 2*
---------+---------
. 1 . | 2* . 4
. 6 4 | . . 5*
```
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 4, column 6. Column 6 already has a printed 2 (row 2, column 6). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 1.
## Board 4 · 6×6
Tap the digit you think is wrong.
Mistake Rush #8 · Board 4 · 6×6:
```text
. 1* . | 5* 3 2
5* 3* 4* | . . 4
---------+---------
4* 5 6 | . . 1
. 2* . | 6 4* 5
---------+---------
2* 6 1 | 4 5* 3
. 4 5 | . 1* 6
```
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. Row 2 already has a printed 4 (row 2, column 6). 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 #8 · Board 5 · 6×6:
```text
. 1* 4* | . 3 6
2 . 3 | 5* 4 1
---------+---------
4 5 6 | 3* 1* .
. 2 . | 6* . 4
---------+---------
1 3 2* | 4* . 5*
6* 4 . | 1 3* .
```
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 6, column 5. Column 5 already has a printed 3 (row 1, column 5). 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.
[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.