The Grünfeld Defence (1.d4 Nf6 2.c4 g6 3.Nc3 d5) was another opening that became a frequent choice of Larsen with the Black pieces and similarly, he placed considerable reliance on Grünfeld-Indian systems as White. This led him to co-author a groundbreaking 1979 book (with Steffen Zeuthen) on this opening and similar structures ("ZOOM 001—Zero Hour for Operative Opening Models"). His book "Larsen's selected games of chess, 1948–69" (1970) is renowned for annotations that delve into chess psychology and the effective use of rare openings. A chapter of the book gives some of Larsen's thoughts on his style and he upholds the views of Polugaevsky and Gligorić that he indulged in flank attacks and favored the advance of rooks pawns more than other contemporary masters. He was also content to be described as an aggressive player, stemming from his dislike of draws. He did, however, dispute the notion that he would willingly accept dubious positions in order to complicate tactics, a characteristic he attributed more to Tal. It should also be noted that later reprints of his book have employed the epithet (and sub-title) "Master of Counter Attack".