Mark Dvoretsky (1947-2016) was known as ‘the strongest International Master in the world’ in the mid-1970s when he decided to pursue a career as a chess trainer. His students Artur Yusupov and Sergey Dolmatov became World Championship Candidates. A meticulous chess analyst, Dvoretsky wrote many highly acclaimed books, his most famous being Dvoretsky's Endgame Manual. He became so popular as a coach that dozens of world-class players repeatedly sought his advice.
