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"Chess Fundamentals," written by José Raúl Capablanca, was regarded by World Chess Champion Mikhail Botvinnik as the greatest chess book ever written. Published in 1921, it contains fundamental chess principles, serving as a classic guide to understanding the game's essential elements. Capablanca's clear explanations, illustrative examples, and emphasis on positional play have made this book a timeless resource for chess players of all levels.