Russian Physics Olympiad (RuPhO) problems are widely regarded as some of the most challenging and creative in the world, often focusing on physical intuition and clever mathematical tricks rather than brute-force calculation. You can find comprehensive "full write-ups" and PDF collections through several academic and archival sources.
Maintains an Olympiad Archive with links to various national competitions, including direct links to major Russian archives like the MIPT (Fiztekh) and Saint Petersburg Physics Olympiads. russian physics olympiad problems pdf
: April, held separately for 9th, 10th, and 11th graders. : April, held separately for 9th, 10th, and 11th graders
Then filter by “Tools” → “Any time” → “Past year” to find recent English-translated versions. He wrote down $PV = nRT$
He reached for his notebook. He wrote down $PV = nRT$. He crossed it out. He wrote the Van der Waals equation. He tried to incorporate the variable gravity. The integral spiraled out of control.