Siegbert Tarrasch
German chess player, chess writer, and chess theoretician / From Wikipedia, the free encyclopedia
Siegbert Tarrasch (German pronunciation: [ˈziːɡbɐt ˈtaraʃ]; 5 March 1862 – 17 February 1934) was a German chess player, considered to have been among the strongest players and most influential theoreticians of the late 19th and early 20th century.