The Ontario Mathematics Competition (OMC) and Leibniz Mathematics Competition (LMC) are 25-question multiple-choice contests similar in format to the American Mathematics Competition (AMC) and the Pascal, Cayley, and Fermat (PCF) contests. The difficulty level is around that of AMC. Top scorers will compete in the OIME. This fall, the OMC will run between October 16th and October 20th. School registration closes September 29th.

If you're interested in writing OMC, create an account and keep an eye out for when registrations open in August!

Ontario Invitational Mathematics Examination

The Ontario Invitational Mathematics Examination (OIME) is an invitational full-solution contest inspired by similar invitational mathematics competitions. It has 10 questions, with difficulty ranging from early AIME questions to mid-level Canadian Mathematical Olympiad (CMO) questions.

Tesseract Mathematics Challenge

The Tesseract Mathematics Challenge (TMC) is a one-hour contest featuring five pairs of mid-to-late Euclid-difficulty short- and long-answer questions to be completed in one hour. The TMC will be held between March 4th and March 8th and school registration closes February 16th.