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table filled with plus and minus signs, where they take turns crossing out rows and columns.
You can find the official papers, including specific versions for different grade levels and difficulty settings, on the Official Tournament of Towns website and the University of Toronto's mirror site . table filled with plus and minus signs, where
The materials for the include problems and solutions for both the Fall and Spring rounds. A geometry problem about a regular octahedron with
A geometry problem about a regular octahedron with its faces divided into smaller triangles, asking for the maximum number of non-adjacent triangles that can be colored. Basic Variant: October 5, 2025
A problem involving a 60-digit number made of ones and eights, requiring a proof of divisibility by a 30-digit number consisting only of nines.
The competition is split into two main seasons, each offering a "Basic" (easier) and a "Senior/Advanced" (harder) paper. Basic Variant: October 5, 2025. Advanced Variant: October 19, 2025. Spring Round (2026): Basic Variant: March 1, 2026. Advanced Variant: March 15, 2026. Final Oral Round: March 29, 2026. Sample Problems from the 47th Tournament