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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 .
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. You can find the official papers, including specific
The materials for the include problems and solutions for both the Fall and Spring rounds. You can find the official papers
For additional preparation, you can browse the full archive of past tasks or review categorized problems on Shkolkovo . Fourty seventh Tournament of Towns, 2025 – 2026 2025 – 2026