---
title: "Mistake Rush #7: 5 Sudoku Boards, 5 Mistakes | Sudoku Flow"
description: "Five small Sudoku boards, one wrong number in each. Mistake Rush #7: count how many you find, then check every answer."
url: https://sudokuflow.com/puzzles/mistake-rush-7/
language: en
---
[Puzzles](https://sudokuflow.com/puzzles/) / Mistake Rush #7
Mistake Rush
# Mistake Rush #7
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/eJ3DGDGIslc)
## Board 1 · 4×4
Tap the digit you think is wrong.
Mistake Rush #7 · Board 1 · 4×4:
```text
2 3 | 4* 1*
. 1* | 3 2
------+------
. . | . 3
1* 2* | 1 .
```
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 4, column 1. Row 4 already has a printed 1 (row 4, column 3). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 3.
## Board 2 · 4×4
Tap the digit you think is wrong.
Mistake Rush #7 · Board 2 · 4×4:
```text
1 4* | 3 .
3 2* | . 1
------+------
4* . | 2 .
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 1 in row 4, column 1. Column 1 already has a printed 1 (row 1, column 1). 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 #7 · Board 3 · 6×6:
```text
5* 1 4 | 3 . .
6* 3 . | 1* 4 5*
---------+---------
. . 3* | 5* . 6
. 4* 5* | 4 1 .
---------+---------
4* 5* 6 | 2* 3 1
3 . 1 | 6 5 .
```
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 4, column 2. Row 4 already has a printed 4 (row 4, column 4). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 6.
## Board 4 · 6×6
Tap the digit you think is wrong.
Mistake Rush #7 · Board 4 · 6×6:
```text
1 4 . | 3* 5* 6
. 3* 5* | . 4 1
---------+---------
5* 1* 3 | . 2* 4*
4 . . | 5 6 .
---------+---------
3 5* . | 6* 1 .
2 1 . | 4 3 5*
```
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 3, column 2. Column 2 already has a printed 1 (row 6, column 2). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 6.
## Board 5 · 6×6
Tap the digit you think is wrong.
Mistake Rush #7 · Board 5 · 6×6:
```text
. 3* 4* | 6* 4 5
5 6 . | 2 1* 3
---------+---------
4 2* 3 | . . 1
1* 5 . | . 3 2
---------+---------
. 1* 5 | 3* 2 4*
. 4 . | 1* 5* .
```
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 1, column 3. Row 1 already has a printed 4 (row 1, column 5). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 1.
## 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.