USAAIO Home
Announcements and news, and the index for everything below.
Open resourceOfficial
Official pages
Rules, dates, and registration come from usaaio.org. This guide is unofficial and can be out of date.
Official pages
Competition Rules
Eligibility, round structure, proctoring, and conduct requirements.
Open resourceUSA-NA-AIO Syllabus
The topic list this guide is built around. If something here disagrees with the syllabus, the syllabus is right.
Open resourcePast Problems
Round 1 and Round 2 archives. Use these for timed practice and post-contest review.
Open resource2027 USA-NA-AIO
Current-season dates, registration, and logistics. Check again before registering or booking a proctor.
Open resource