How does challenge mode work

Question

How

Answer 1

You can check the 7th reply in this thread. (sorted by votes)

https://www.sololearn.com/Discuss/318950/?ref=app

As for halting a challenge midway, I doubt there's a proper way to do so, but you can try force closing the app at the risk of missing out on one round.

Answer 2

How can one exit from an already going on challenge