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North American Computational Linguistics Open Competition


  Why participate in the Linguistics Open Competition?

  • Ever wanted to try deciphering an ancient script, decoding Swahili, or counting in Indonesion?
  • Now you can do it! No prior knowledge of linguistics required, just some curiosity and basic problem-solving skills.
  • Compete for a chance to go to the international competition and meet participants from all over the world.
  • And it's free!
  • Try out the problems on this page--we posted a link to solutions below (you can also download the three problems on our flyer:  PDF icon naclo_montreal_flyer.pdf




What is North American Computational Linguistics Open Competition (NACLO)?

If you're interested in language and enjoy problem-solving, come participate in the North American Computational Linguistics Open Competition.  NACLO is a fun and educational contest  for students in grades 6-12 in which you will solve linguistics problems from a variety of languages (natural and artificial).  No prior knowledge of linguistics or any particular language is required.  All you need to bring is your curiosity and enthusiasm!

The first round of the contest will take place on Thursday, January 27, 2022 from 10am to 1pm (for location, see below). Students who perform well on the first round will be invited back for a second invitational round, to take place on March 17 2022, 9am - 1pm.  The Canadian winners of the invitational round will be eligible to represent Canada at the International Linguistics Olympiad. More information about the competition can be found at at the official NACLO website.

If you are interested in entering the French version of the competition in Canada, please visit this website






Training Session

Curious? Want to learn more and see some example problems?

We're currently (Nov 23-Dec 15 2022) hosting training sessions on Wednesdays at 7pm If you're interested in participating in an information and training session let us know (naclo.montreal [at]!



Registration Deadline:  January 22, 2022, noon PST (on-site registration may be possible, but be there 30min early).

Registration is free, you can register here



On the day of competition: January 27 2022

The competition will take place at McGill:

TIME: 10am-13pm


Please arrive 15 minutes early and allow time to find the room. There will be signs to the appropriate room


Who's organizing this?

The olympiad is organized by linguists at universities across the continent. You can learn more at the general NACLO website.

This year's English version of the linguistics Olympiad in Montréal is organized by faculty and students at McGill.

You can reach us at naclo.montreal [at]




 Solutions to the Problems

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