If you can find (and survive) these PDFs, you can solve almost anything.
Alex, a student obsessed with the perfect score, finally found a leaked
These are the primary sources for the national-level "All-Russian" competition problems: RuPhO 2023-2024 Finals (English Translation)
For English-translated archives of the All Russian Olympiad (RuPhO) from 2017–2018 and beyond, visit Physoly.tech Moscow Physics Olympiad Archives:
MIPT (Moscow Institute of Physics and Technology) organizes this, and their problem sets (PDF) represent the modern Russian style of high-difficulty, multi-part problems.
lists various Russian competitions, including the Moscow Physics Olympiad and Saint Petersburg Physics Olympiad, though many links lead to Russian-language sources. Internet Archive
If you are a student or teacher evaluating these resources, here is why the "new" generation of problems is superior for modern training: