---
title: "Mistake Rush #17: 5 Sudoku Boards, 5 Mistakes | Sudoku Flow"
description: "Five small Sudoku boards, one wrong number in each. Mistake Rush #17: count how many you find, then check every answer."
url: https://sudokuflow.com/puzzles/mistake-rush-17/
language: en
---
[Puzzles](https://sudokuflow.com/puzzles/) / Mistake Rush #17
Mistake Rush
# Mistake Rush #17
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/yVvfq_oBQzk)
## Board 1 · 4×4
Tap the digit you think is wrong.
Mistake Rush #17 · Board 1 · 4×4:
```text
. . | . .
2* 3 | 1* 4
------+------
1 4* | 2 .
3 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 3 in row 4, column 4. Row 4 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 1.
## Board 2 · 4×4
Tap the digit you think is wrong.
Mistake Rush #17 · Board 2 · 4×4:
```text
. 4 | . 1*
2* 1 | . 3
------+------
4* 2 | 3* 1
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 1, column 4. Column 4 already has a printed 1 (row 3, column 4). 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 #17 · Board 3 · 6×6:
```text
. 1* 3* | 6 2 .
2 4* 6* | 3 . .
---------+---------
. 6* . | . 5* 3
3 5 4 | 1* . 4*
---------+---------
6 . 5 | 2 4 1*
. 2* 1 | 5* 3 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 4, column 6. Row 4 already has a printed 4 (row 4, column 3). A printed digit can't be wrong, so the blue one is. The right digit for that cell is 2.
## Board 4 · 6×6
Tap the digit you think is wrong.
Mistake Rush #17 · Board 4 · 6×6:
```text
1* 4 5* | 6 3 2
3 6 . | 1 . 5
---------+---------
. . 3 | . 2 .
4* 5* 6 | 3 . 1*
---------+---------
2* 3* 1* | . 6* .
6* 5 4 | 2 . 3*
```
Digits marked * were filled in by a player; the others were printed with the puzzle.
Show the answer
It's the blue 5 in row 4, column 2. Column 2 already has a printed 5 (row 6, column 2). 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 #17 · Board 5 · 6×6:
```text
. 4* 5 | 4 2* .
. . 2 | 5* . 6
---------+---------
4* 3* 6 | 1 5 2*
2 5 1 | 6* 3 .
---------+---------
5* 2* . | 3* . 1
. 6 3 | . 4* 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 2. Row 1 already has a printed 4 (row 1, column 4). 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.