PUZZLE CHALLENGE

The 2020 Invariants Michaelmas Puzzle Challenge is underway! Check out the problems below and look through our archives for previous problems and solutions!

Solutions should be submitted to puzzles@invariants.org.uk no later than 14:59 BST on the Sunday after they are posted. Please quote your name, your institution, the week, and the numbers of the problems attempted in the subject line, e.g. Septus Quizonacci - University of Oxford - Week 7 - Problems 1,2,3.