Chess Tactics: S. Levitsky - Frank Marshall (Breslau, 1912)

Frank James Marshall (August 10, 1877 -- November 9, 1944), was the U.S. Chess Champion from 1909-1936, and was one of the world's strongest chess players in the early part of the 20th century.
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Stepan (Stefan) Levitsky (Levitski, Lewitzki) (25 April 1876, Serpukhov -- 21 March 1924, Glubokaya) was a Russian chess master.
In 1899 he took 3rd in Moscow (All Russian Masters' Tournament, 1st RUS-ch, Mikhail Chigorin won). In 1903 he took 8th in Kiev (3rd RUS-ch, Chigorin won). In 1905/06 he tied for 8-11th in Sankt Petersburg (4th RUS-ch, Gersz Salwe won). In 1907 he took 2nd, behind Eugene Znosko-Borovsky, in St Petersburg. He lost a match to Simon Alapin (0 : 5) at St Petersburg 1907.
Stepan Levitsky won at Sankt Petersburg 1911 (All-Russian Amateur Tournament). In July--August 1912, he tied for 13-14th in Breslau (18th DBS--Congress, Rubinstein and Oldrich Duras won). In August--September 1912, he took 3rd in Vilna (8th RUS-ch, Akiba Rubinstein won). In 1913 he lost a match to Alexander Alekhine (3 : 7) in Sankt Petersburg. In 1913/14, he took 13th in St Petersburg (9th RUS-ch, Alekhine and Aron Nimzowitsch won).
He introduced the Queen's Bishop Attack, known as the Levitsky Attack (1.d4 d5 2.Bg5) in the Queen's Pawn Game (D 00).