Mikhail Chigorin

Mikhail Chigorin was the leading Russian master of the late nineteenth century and a decisive figure in building an organized chess culture in Russia. He published, taught, promoted tournaments, and demonstrated that Russian players could compete at the highest international level.

He challenged Wilhelm Steinitz for the World Championship in 1889 and again in 1892, losing both matches. His play gave great weight to active pieces and concrete calculation. Concrete calculation means examining actual sequences of moves and replies instead of relying only on broad strategic rules.

Several openings retain his name. The best known is the Chigorin Defense to the Queen's Gambit, in which Black develops a knight early to exert central pressure. His willingness to accept unconventional structures anticipated later debates about general principles and the specific demands of a position.