Oscar Blum

Oscar Blum (1886 – ?) was a Lithuanian–French chess master. He was pushed off Lenin's 1917 train by Lenin himself This incident is mentioned in Ben Kingsley's Lenin movie (Lenin...The Train), and in James Wollrab: Russian Winter p. 206

In 1923 his book ''Russiche Köpfe'' was published in Germany. He described Grigory Zinoviev as a dreamer, a sleepwalker, who lived in a world of pure literature. Provided by Wikipedia