Wall Keeper

Wall Keeper


In this time, you need to implement the solver of Lights Out the puzzle.

rule of the puzzle :

  • This puzzle uses 5x5 grid. Each panel has two state ( light on or off ).
  • if you click a panel, the panel and adjacent (4 directions) panels will flip. ( on <=> off )
  • The goal is all panels lights off.

Input: ON-state panels as a list of Integers.

Output: Clicked panels as a list of Integers.


wall_keeper([5, 7, 13, 14, 18]) == [2, 6, 7, 8, 10, 12, 15, 18, 24, 25]

How it is used: Get the puzzle's automatic answer.

all([1 <= p <= 25 for p in on_panels])
It does not have to be the shortest answer

Invalid hot key. Each hot key should be unique and valid
Hot keys:
CheckiO Extensions

CheckiO Extensions allow you to use local files to solve missions. More info in a blog post.

In order to install CheckiO client you'll need installed Python (version at least 3.8)

Install CheckiO Client first:

pip3 install checkio_client

Configure your tool

checkio --domain=py config --key=

Sync solutions into your local folder

checkio sync

(in beta testing) Launch local server so your browser can use it and sync solution between local file end extension on the fly. (doesn't work for safari)

checkio serv -d

Alternatevly, you can install Chrome extension or FF addon

checkio install-plugin
checkio install-plugin --ff
checkio install-plugin --chromium

Read more here about other functionality that the checkio client provides. Feel free to submit an issue in case of any difficulties.

<< <
> >>
exec show

Whats Next?

Free accounts will see Best CheckiO solutions with some delay.
Best Solutions will be opened in a moment
Become Awesome and Don't wait
The next stage is ""
Will be activated in
View More Solutions Random Review Solutions Go to the next mission