Boris Spassky - Wikipedia

The Top Ten Chess Players of All Time & Their Opening Moves

Erwin's Opening Lab: The Dubov Tarrasch

Opening Theory Archives - British Chess News

Boris Spassky Armchair Warrior

The Tarrasch Defence - A Complete Repertoire Against 1.d4, 1.c4 and 1.Nf3 - Erwin l'Ami

BOOKS IN ENGLISH

The World Chess Championship 1972 was a match between challenger Bobby Fischer of the United States and defending champion Boris Sp…

William Lombardy's exceptional performance in 1960 is often overlooked, Chess

56 Games Fischer VS Spassky, PDF, Gaming

Quantifying the complexity and similarity of chess openings using online chess community data