These competitions are open to everyone, different tabs correspond to different categories. Join the rated ones to boost your rating and earn experience points, and try the casual ones for XP and some problem-solving fun :) Below is the list of all the competitions.
Live
(2)
Harder Challenges•Casual
Ongoing
Cool couple
One interesting problem from Analysis + one very natural probability question
The same 3 problems that students tried solving on July 15th and July16th, as a part of Day 1 of the latest International Maths Olympiad. Try not to look up forums online. Good luck!