Semyon Alapin (1856-1923) was a Russian chess master and openings analyst. He was born in Vilnius, Lithuania. He later settled in St. Petersburg, then Heidelberg, Germany. While studying at St. Petersburg Engineering Institute, he became one of the strongest players in the city. In 1879, he tied for first in the Best Russian Players tournament in St. Petersburg, but lost the play-off to Chigorin. In 1880 and 1881, he lost a match against Chigorin. In 1893, he tied for 1st place in the championship of Berlin. In 1899, he drew a match with Schlechter in Vienna (+1-1=4). In 1902 he was ranked #8 in the world. In 1911, he won the championship of Munich. Alapin’s Opening is 1.e4 e5 2.Ne2. The Sicilian, Alapin variation is 1.e4 c5 2.c3. Alapin’s Gambit is 1.e4 e6 2.d4 d5 3.Be3. He was a linguist and involved in grain commodities. He spent his later years in Heidelberg, Germany and died there in 1923.