Capablanca excelled in simple positions and endgames; Bobby Fischer described him as possessing a "real light touch". He could play tactical chess when necessary, and had good defensive technique. He wrote several chess books during his career, of which "Chess Fundamentals" was regarded by Mikhail Botvinnik as the best chess book ever written. Capablanca preferred not to present detailed analysis but focused on critical moments in a game. His style of chess was influential in the play of future world champions Bobby Fischer and Anatoly Karpov.