---
title: "Mistake Rush #2: 5 Sudoku Boards, 5 Mistakes | Sudoku Flow"
description: "Five small Sudoku boards, one wrong number in each. Mistake Rush #2: count how many you find, then check every answer."
url: https://sudokuflow.com/puzzles/mistake-rush-2/
language: en
---
[Puzzles](https://sudokuflow.com/puzzles/) / Mistake Rush #2
Mistake Rush
# Mistake Rush #2
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/6u8xr8U3qPc)
## Board 1 · 4×4
Tap the digit you think is wrong.
Mistake Rush #2 · Board 1 · 4×4:
```text
3* . | 4* .
2 4* | 1* 3*
------+------
3 1 | . .
4 2 | . 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 1, column 1. Column 1 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 1.
## Board 2 · 4×4
Tap the digit you think is wrong.
Mistake Rush #2 · Board 2 · 4×4:
```text
3 . | 2 3*
. . | 1 .
------+------
1* 3* | . 2*
4 2 | 3 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 1, column 4. Row 1 already has a printed 3 (row 1, column 1). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 4.
## Board 3 · 6×6
Tap the digit you think is wrong.
Mistake Rush #2 · Board 3 · 6×6:
```text
5 . 1 | . 3* 2
3* 2 . | 4 1* 5
---------+---------
2 3* 4 | 1* 5 .
. 6 5* | 2 4* 3*
---------+---------
6 2* 3 | 5 . 4*
4* . . | . 6 .
```
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 5, column 2. Column 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 1.
## Board 4 · 6×6
Tap the digit you think is wrong.
Mistake Rush #2 · Board 4 · 6×6:
```text
1 6 2 | . 3 6*
3 5 . | 1* 2 .
---------+---------
2* . 6 | 4 1* .
5 . 1* | . . 2*
---------+---------
4 2* 3 | 6* 5* .
6* 1 . | 2 4* 3
```
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 1, column 6. Row 1 already has a printed 6 (row 1, column 2). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 4.
## Board 5 · 6×6
Tap the digit you think is wrong.
Mistake Rush #2 · Board 5 · 6×6:
```text
4* 3 1 | . 2 .
. . 6* | 1 4* 3
---------+---------
5* . . | 3 6* 2
. 6* 2 | 4* . 1
---------+---------
. 4 3 | 5 1 6*
1* . 6 | 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 6 in row 2, column 3. Column 3 already has a printed 6 (row 6, column 3). 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.