Kasparov has written books on chess. He published a controversial autobiography when still in his early 20s, originally titled "Child of Change", later retitled "Unlimited Challenge". This book was subsequently updated several times after he became World Champion. Its content is mainly literary, with a small chess component of key unannotated games. He published an annotated games collection in 1983, "Fighting Chess: My Games and Career", which has been updated several times in further editions. He also wrote a book annotating the games from his World Chess Championship 1985 victory, "World Chess Championship Match: Moscow, 1985".