How to access challenges from the website?

Question

As the title says, I'm trying to access the "challenges" portion of the site from my desktop. I was using the Android app earlier this morning and I noticed there was an additional button up top - "Challenges". I followed it and tried a quick challenge, and I liked it. Then I came home and tried to do more challenges from my desktop PC but I cannot find the same "challenges" area for the life of me. Is it not available from the website? Or am I just being silly and overlooking it somehow? Thanks for any help.

Answer 1

I believe they made it not available on the web to prevent cheating.