Our world-class puzzle masters have all the problems to satisfy your puzzle needs!


Every term, the Invariants hold an online weekly puzzle competion with prizes worth £500! Check out our current competition or dig through our problem archives.

We also host in-person maths competitions attracting some of the best mathematicians in Oxford! These usually take place once or twice per year.

Oxford also has a strong presence each year at the Imperial Mathematics Competition and the qualifying round for students wishing to participate is organized by the Invariants in Oxford.