Boris Godunov (play) opera, "Boris Godunov" (1874), is based on this play. Having finished the play, Pushkin famously wrote to his friend Pyotr Vyazemsky: "What a Pushkin, what a son of a bitch!" . Pushkin wrote of the play: "The study of Shakespeare, Karamzin, and our old chronicles gave me the idea of clothing in dramatic forms one of the most dramatic epochs of our history. Not disturbed by any other influence, I imitated Shakespeare in his broad and free depictions of characters, in the simple and careless combination of plots; I followed Karamzin in the clear development of events; I tried to
Boris Godunov (opera) finished in 1872 (vocal score, 14 December 1871; full score 23 June 1872), and submitted to the Imperial Theatres in the autumn. Most Mussorgsky biographers claim that the directorate of the Imperial Theatres also rejected the revised version of "Boris Godunov", even providing a date: 6 May 1872 (Calvocoressi), or 29 October 1872 (Lloyd-Jones). Recent researchers point out that there is insufficient evidence to support this claim, emphasizing that in his revision Mussorgsky had rectified the only objection the directorate is known to have made. In any case, Mussorgsky's friends took matters into their own hands, arranging the performance of