What are challenges

Question

In the achievements section, it talks about challenges. Where and what are they?

Answer 1

In te second section is for challenge. You can challenge other Sololearn users. Every 10 win you get 1% challenges in achievement section.

Answer 2

https://www.sololearn.com/Discuss/585895/?ref=app
https://www.sololearn.com/Discuss/662892/?ref=app
https://www.sololearn.com/Discuss/300025/?ref=app
https://www.sololearn.com/Discuss/339094/?ref=app