About this competition
NACLO is a contest of computational-linguistics puzzles: you're given problems in unfamiliar languages (Mayan numerals, Inuit grammar, ancient writing systems) and asked to deduce rules from the patterns. No prior linguistics or programming knowledge is needed — strong logical reasoning is the only prerequisite.
NACLO is one of the most under-the-radar competitions for kids who love puzzles. Top scorers qualify for the U.S. team at the International Linguistics Olympiad. Excellent profile-builder for CS, linguistics, and cognitive-science admissions.
Season & deadlines
Open round in late January; invitational round in March.
Season window: January through March.
Cost
Free — Free to participate.
Prizes & outcomes
International Linguistics Olympiad team selection
Prep resources
- Official rules and game manual · website