Complex sentence: Evans had always been interested in writing as well as playing and before the age of eighteen he had already published "David Bronstein's Best Games of Chess, 1944-1949" and the "Vienna International Tournament, 1922".
Split into simpler sentences: Evans had always been interested in writing as well as playing. Before the age of eighteen he had already published "David Bronstein's Best Games of Chess, 1944-1949" and the "Vienna International Tournament, 1922".