the play, modelled on Shakespeare's histories, was written in 1825 and published in 1831, but was not approved for performance by the state censors until 1866, almost 30 years after the author's death. Production was permitted on condition that certain scenes were cut. Although enthusiasm for the work was high, Mussorgsky faced a seemingly insurmountable obstacle to his plans in that an Imperial ukaz of 1837 forbade the portrayal in opera of Russian Tsars (amended in 1872 to include only Romanov Tsars). Original Version When Lyudmila Shestakova, the sister of Mikhail Glinka, learned of Mussorgsky's plans, she presented him with a volume of Pushkin's dramatic works, interleaved with blank pages and bound, and using this, Mussorgsky began work in October 1868 preparing his own libretto. Pushkin's drama consists of 25 scenes, written predominantly in blank verse. Mussorgsky adapted the most theatrically effective scenes, mainly those featuring the title character, along with a few other key scenes (Novodevichy, Cell, Inn), often preserving Pushkin's verses. Mussorgsky worked rapidly, composing first the vocal score in about nine months (finished 18 July 1869), and completed the full score five months later (15 December 1869), at the same time working as a civil servant. In 1870, he submitted the libretto to the state censor for examination, and the score to the literary and music committees of the Imperial Theatres. However, the opera was rejected (10 February 1871) by a vote of 6 to 1, ostensibly for its lack of an important female role. Lyudmila Shestakova recalled the reply made by conductor Eduard Nápravník and stage manager Gennadiy Kondratyev of the Mariinsky Theatre in response to her question of whether Boris had been accepted for production: Other questionable accounts, such as Rimsky-Korsakov's, allege that there were additional reasons for rejection, such as the work's novelty: Meanwhile, Pushkin's drama (18 of the published 24 scenes, condensed into 16) finally received its first performance in 1870 at the Mariinsky Theatre, three years in advance of the premiere of the opera in the same venue, using the same scene designs by Matvey Shishkov that would be recycled in the opera. Revised Version In 1871, Mussorgsky began recasting and expanding the opera with enthusiasm, ultimately going beyond the requirements of the directorate of the Imperial Theatres, which called simply for the addition of a female role and a scene to contain it. He added three scenes (the two Sandomierz scenes