Canadian Mathematical Society

CMO Qualifying Repêchage Competition

Supported by the Actuarial Profession
Casualty Actuarial Society
Society of Actuaries

The Canadian Mathematical Olympiad Qualifying Repêchage (CMOQR or just Repêchage) is an invitation-only contest that serves as a qualifier for the Canadian Mathematical Olympiad (CMO).

Students participating in the Repêchage receive a set of problems whose solutions must be submitted within a week of receipt. Students who do well on the Repêchage are then invited to write the CMO.

The CMS wishes to thank the sponsors and partners who make our competitions program successful.


2019 Competition

In 2019, the CMS invited 83 students to write the Repêchage. Of these, the following 22 participants wrote solution sets that earned them an invitation to the 2019 CMO at the end of March. Congratulations!

William Szeto (University of Toronto Schools, Toronto, ON)
Andrew Liang Marc Garneau C.I., Toronto, ON)
Michael Liudeng (Maple High School, Maple, ON)
Andrew Mackenzie (Mackenzie Academy, Quyon, QC)
Daniel Yang (University of Toronto Schools, Toronto, ON)
Jiangxu (Justin) Wan (University Hill Secondary School, Vancouver, BC)
Evan Lu (Hon. Vincent Massey S. S. , Windsor, ON)
Andrew Yuan (Marc Garneau C.I., Toronto, ON)
Jennifer Wang (University of Toronto Schools, Toronto, ON)
Liam Kusalik (The Renert School, Calgary, AB)
Houjin Chen (Fleetwood Park Secondary, Surrey, BC)
Andy Kim (Math Enrichment Centre, Carleton University, Ottawa, ON)
Albert Ding (University of Toronto, Toronto, ON)
Aaron Li (Markville S.S, Markham, ON)
Quang Nguyen (Bernice MacNaughton High School, Moncton, NB)
Tianhao Han (TT Math School, Markham, ON)
Hshmat Sahak (Marc Garneau C.I., Toronto, ON)
Alexander Monteith-Pistor (Math Enrichment Centre, Carleton University, Ottawa, ON)
Tian-hua Jiang (Math Enrichment Centre, Carleton University, Ottawa, ON)
Adam Huang (Stuart Academy, United States)
Alvin Dai (Bell High School, Nepean, ON)
Isaac Liao (Earl Haig Secondary School, North York, ON)

Want a challenge? Try the 2019 problem set yourself!

Official solutions are also available.


Students are given invitations to write the Repêchage based primarily on the results of the Canadian Open Mathematics Challenge (COMC). Normally the top 50 students (approx.) from the COMC receive a direct invitation to write the CMO. The next 50-75 students normally receive an invitation to the Repêchage.


Students invited to write the Repêchage must complete a declaration that they meet the eligibility requirements to write the CMO. The eligibility requirements to write the CMO are as follows:

Past Competitions

Preparing for the Repêchage

In addition to the past Repêchage test papers, students are encouraged to use past COMC and CMO papers to help prepare for the Repêchage. The CMS also has many problem-solving resources available for competitors.

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