[old] Chess Knight [old] Chess Knight
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Your friend loves chess very much, but he's not a strong player. You can help him by using your programming skills.
If this mission is too simple for you, try another one from this set - The shortest Knight's path.

Your task is to write a function that can find all of the chessboard cells to which the Knight can move. The input data will consist...
If the same cell appears more than once - do not add it again. You should return the list of all of the possible cells and sort them as follows: in alphabetical order (from 'a' to 'h') and in ascending order (from 'a1' to 'a8' and so on).

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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=js 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.

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