Lionel Kieseritzky

Lionel Adalbert Bagration Felix Kieseritzky (Russian: Лионель Адальберт Багратион Феликс Кизерицкий; 1 January 1806 [O.S. 20 December 1805] – 18 May [O.S. 6 May] 1853) was a Baltic German chess master and theoretician, known for his contributions to chess theory, as well for a game he lost against Adolf Anderssen, known as the "Immortal Game". Kieseritzky's name became associated with several openings and opening variations, such as the Kieseritzky Gambit, Kieseritzky Attack, and the Boden–Kieseritzky Gambit.