"Nikola, what’s wrong with Stephen?" Sofia shouted in fear when she saw Nikola poking his tools inside Stephen’s leg.

"He stepped on a landmine."


"Don't worry. The robots in his class have an extremely strong frame unlike us; he was mostly unscathed by the explosion. Once I double check everything, I’ll send him in for cleaning."

"But where did he even find the landmine?"

"Yes, that's the question we should be worrying about. There's a landmine field about a 2 hour walk away from here. It looks like somebody is protecting something, or maybe protecting themselves from something. However, there is no easy way to cross that field.

"Is Stephen conscious now? Can he hear us?"

"No, but I know what you want to ask and my answer is no! We are not going to let Stephen clear a path through the field for us. Even his fireproof frame will not be able to endure the blasts for that long. Plus it’s an extremely unpleasant activity."

"How could you think that I would even ask something like that?" Sofia said angrily.

"So what was your question about then?"

"It doesn’t matter…so what do you propose? What are our options?"

"We will let you go there," said Nikola.

"What?! My frame isn't as strong as Stephen’s! No. No. No. I may be beautiful and expensive, but that doesn't mean I am durable and reliable."

"There is a magnetic field there so every landmine is drawn to a metallic frame."

"Oh, so it won't be as bad if I go there?"

"Exactly. You have almost no metallic details --you can easily move around there." ...

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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=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.

Pair Programming (Beta-version)

Welcome to Pair Programming! Engage in real-time collaboration on coding projects by starting a session and sharing the provided unique URL with friends or colleagues. This feature is perfect for joint project development, debugging, or learning new skills together. Simply click 'Start Session' to begin your collaborative coding journey!

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You are trying to join a pair programming session that has not started yet.

Please wait for the session creator to join.

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It might happen accidentally, so that you can wait for reconnection.

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