The International Logic Olympiad (ILO) is built on the belief that logic is the universal language of problem-solving. This essential skill powers success in every arena, from navigating daily challenges and solving puzzles to structuring arguments in school assignments across Math, History, and Linguistics. It is the core foundation for advanced professional fields like computer science, engineering, medicine, business and law, where rigorous reasoning and decisive problem-solving are paramount. The ILO aims to identify, encourage, and celebrate exceptional logical and analytical aptitude among school students.
Our contest challenges participants to think critically and apply logical reasoning through puzzles and cognitive games, using concepts such as sets and set operations (union, intersection, complement) and symbolic mathematics at a basic algebra level. It is not a math contest! Our ultimate vision is to foster a pervasive culture of deep inquiry and foundational critical thinking, equipping young minds for excellence in all future academic and career pursuits.
Competition Process
Qualifiers will be a 90-minute proctored, online exam consisting on multiple-choice and numerical answers. Top 20 from each division will be invited for the Finals. The Finals will be a video-based proctored online exam for 120 minutes. Same format with multiple choice and numerical answers. The Qualifiers will be held on Sunday, January 24, 2027 (Qualifiers)Judging Criteria
Participate
Website: https://logicolympiad.com
Managing Organization: International Logic Olympiad
Eligibility:
Current students in Grades 1-11. Primary Division is Grades 1-3, Junior Division is Grades 4-7, and Senior Division is Grades 8-11.
Current students in Grades 1-11. Primary Division is Grades 1-3, Junior Division is Grades 4-7, and Senior Division is Grades 8-11.
Registration Dates
January 1, 2026
12:01am PST
Registration Opens
November 30, 2026
12:01am PST