---
title: "Mistake Rush #16: 5 Sudoku Boards, 5 Mistakes | Sudoku Flow"
description: "Five small Sudoku boards, one wrong number in each. Mistake Rush #16: count how many you find, then check every answer."
url: https://sudokuflow.com/puzzles/mistake-rush-16/
language: en
---
[Puzzles](https://sudokuflow.com/puzzles/) / Mistake Rush #16
Mistake Rush
# Mistake Rush #16
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/pa14AWUaLMg)
## Board 1 · 4×4
Tap the digit you think is wrong.
Mistake Rush #16 · Board 1 · 4×4:
```text
3* . | 2 1
1 2* | 4* 3*
------+------
. . | 3* .
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 3 in row 1, column 1. Column 1 already has a printed 3 (row 4, column 1). 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 #16 · Board 2 · 4×4:
```text
. . | 2 4*
1* . | 3 1
------+------
3 1* | . 2*
2 . | 1* 3
```
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 4). 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 #16 · Board 3 · 6×6:
```text
. 1* . | . 2 4*
2 6 4* | 1 . 5
---------+---------
. 3* 6* | . 4* .
4* 2 . | 1* 5 6
---------+---------
6 . 2 | 4 1 3
1* 4 . | 5* 6* 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 4, column 4. Column 4 already has a printed 1 (row 2, column 4). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 3.
## Board 4 · 6×6
Tap the digit you think is wrong.
Mistake Rush #16 · Board 4 · 6×6:
```text
4 . 5* | 6 3* 2
. 3* . | 5 4* 1*
---------+---------
3 2* . | . 2 5
5 . . | 4 6 3*
---------+---------
2 . 4* | 3* 1 .
1 6* 3* | . 5 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 3, column 2. Row 3 already has a printed 2 (row 3, column 5). 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 #16 · Board 5 · 6×6:
```text
1 . 2* | 3 4 6
. 6 4* | 2* 5* .
---------+---------
2* 1* . | 4* 6 .
6 . 5 | . 3 2
---------+---------
5* 3 1 | . 2 6*
4* 2* 6 | . 1 .
```
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 5, column 6. Column 6 already has a printed 6 (row 1, column 6). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 4.
## 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.