Еґ—爆蝉暾柒蹂躟＜郓... | 47-霳脸大水鐼鼞麚崳埋＜让尟哴圸镜头剝近距离蝉嘴给狼埋看＜丝袜高跟迱惑＜ж—

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

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. For additional preparation, you can browse the full

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 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. Advanced Variant: October 19, 2025

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

table filled with plus and minus signs, where they take turns crossing out rows and columns.