---
title: "Mistake Rush #10: 5 Sudoku Boards, 5 Mistakes | Sudoku Flow"
description: "Five small Sudoku boards, one wrong number in each. Mistake Rush #10: count how many you find, then check every answer."
url: https://sudokuflow.com/puzzles/mistake-rush-10/
language: en
---
[Puzzles](https://sudokuflow.com/puzzles/) / Mistake Rush #10
Mistake Rush
# Mistake Rush #10
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/-1Cu5Jacdfw)
## Board 1 · 4×4
Tap the digit you think is wrong.
Mistake Rush #10 · Board 1 · 4×4:
```text
. 2 | 1 3
. 1* | 2* .
------+------
2 . | 3* 1*
3 1 | . 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 2. Column 2 already has a printed 1 (row 4, column 2). 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 #10 · Board 2 · 4×4:
```text
3* 4* | . .
. 2 | 4 2*
------+------
. 3* | 1 .
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 2 in row 2, column 4. Row 2 already has a printed 2 (row 2, column 2). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 3.
## Board 3 · 6×6
Tap the digit you think is wrong.
Mistake Rush #10 · Board 3 · 6×6:
```text
. 2 6 | . . 1
1 . 5* | 2* 6* 4
---------+---------
5* 1 2 | 4* 3* 6*
6* 4 . | 5* 1 .
---------+---------
. . 4 | 1 2 5
. 2* 1 | . 4* 3
```
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 6, column 2. Column 2 already has a printed 2 (row 1, column 2). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 5.
## Board 4 · 6×6
Tap the digit you think is wrong.
Mistake Rush #10 · Board 4 · 6×6:
```text
. . . | 3 6 4
. 3 6 | 5 . 2*
---------+---------
6 1* 2* | . 3 5
. 4 5 | 4* 2 6*
---------+---------
2 . 3 | . 4 .
1* 6* 4* | 2* 5* 3*
```
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 4. Row 4 already has a printed 4 (row 4, column 2). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 1.
## Board 5 · 6×6
Tap the digit you think is wrong.
Mistake Rush #10 · Board 5 · 6×6:
```text
. 6* 2 | . 5 .
5 4 1 | 6* 2 3*
---------+---------
4 3 6 | 2 . 5
. . 5* | 4* 3 6*
---------+---------
. 2* . | 5* 4 .
1 4* . | 3* 6* 2
```
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 6, column 2. Column 2 already has a printed 4 (row 2, column 2). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 5.
## 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.