Luděk Pachman (German: Ludek Pachman, May 11, 1924, Bělá pod Bezdězem, today Czech Republic – March 6, 2003, Passau, Germany) was aCzechoslovak-German chess grandmaster, chess writer, and political activist. In 1972, after being imprisoned and tortured almost to death by theCommunist regime in Czechoslovakia, he was allowed to emigrate to West Germany. He lived the remainder of his life there, and resumed his chess career with considerable success, including playing in the Interzonal in 1976 and winning the West German Championship in 1978.
Pachman was also a prolific author, publishing eighty books in five languages. In the 1950s, he became the world's leading opening expert with the publication of his four-volume opus, Theory of Modern Chess. Pachman considered Modern Chess Strategy, published in 1959, to be his best book. His book Checkmate in Praguerecounts his treatment at the hands of the Communist authorities.