Louis Paulsen (1833–1891) was one of the 19th century’s strongest chess players and a world record holder in blindfold chess. He maintained an unbeaten record in matches, created several opening systems and was an originator of the positional approach to the game. This extensive biography—the first in English—explores Paulsen’s life and career and includes 719 of his games, presented here with both contemporary and modern comments.

Historian Hans Renette is FIDE master in chess (with 2 IM norms). He lives in Bierbeek, Belgium.