Moscow 1925 was the first state-sponsored international chess tournament, which marked an important step in the development of Soviet chess. It featured ten Soviet masters and eleven foreign stars, of whom the world champion José Raúl Capablanca and his predecessor Emanuel Lasker were expected to be the main contenders, but it was the Soviet master Efim Bogoljubow who scored an unexpected victory. Bogoljubow was commissioned to annotate all 210 games for the tournament book, which is here being published in English for the first time, exactly 100 years after the event.