Well that was just too cool! Thank you very very very much!! Interesting how fluid and relaxed his wrists are, his contribution to piano playing is generally considered to be a departure from 19th century technique, but it seems that he is an exponent of that school...
Yes, it seems as if Prokofiev's piano technique is remarkably orthodox in spite of the iconoclasm of his style. As a teenager in the Moscow Conservatory he got first place in the piano competition with his performance of his own piano concerto no. 1. Though his professors hated the piece, his playing was fundamentally very sound.
Thanks very much for the translation. This is a priceless piece of musical history.