Boris Godunov (Russian: Борис Годунов, Borís Godunóv; variant title: Драматическая повесть, Комедия o настоящей беде Московскому государству, o царе Борисе и о Гришке Отрепьеве, A Dramatic Tale, The Comedy of the Distress of the Muscovite State, of Tsar Boris, and of Grishka Otrepyev) is a closet play by Alexander Pushkin. It was written in 1825, published in 1831, but not approved for performance by the censor until 1866. Its subject is the Russian ruler Boris Godunov, who reigned as Tsar from 1598 to 1605. It consists of 25 scenes and is written predominantly in blank verse. Modest Mussorgsky's opera, Boris Godunov (1874), is based on this play. Source: Wikipedia (en)