Among other examples of Larsen's writing, he was one of seven top grandmasters who wrote chapters for the 1974 book "How to Open a Chess Game". He edited the tournament book for San Antonio 1972. When Ken Smith played most of his games in that event with the white pieces using his patented Smith-Morra Gambit, Larsen quipped—after one of Smith's opponents responded to e4 with e6 entering a French Defense and avoiding the gambit—"stronger was c5, winning a pawn!" He also wrote the well-received "Karpov Vs. Korchnoi: World Chess Championship, 1978", which was published within days of the match ending and was the first book in any language on the 1978 World Championship match.