For the original source, you can find the Russian version hosted by Budker Institute of Nuclear Physics Problemas de Física (Spanish Edition)
If you have obtained a copy of the Savchenko PDF, it is a powerful tool if used correctly: savchenko physics pdf
The book became the gold standard for physics teachers in specialized "physics and mathematics" schools (like the famous SPhO—St. Petersburg Physics Olympiad circuit). The reason is simple: Savchenko’s problems force you to think, not just plug numbers into formulas. For the original source, you can find the
"Problems in General Physics" by O. Ya. Savchenko is a challenging Russian problem set geared toward Physics Olympiad preparation, featuring over 2,000 creative problems in 14 thematic chapters. The text, which emphasizes high-level analytical skills, is widely used by students, with an English translation available at Savchenko Solutions "Problems in General Physics" by O