Chess Grandmaster and arbiter most widely known for arbitrating the famous encounter between Bobby Fischer and Boris Spassky. He earned the Dresden Chess Tournament when he was 15 yrs . old. He was an extremely effective correspondence chess participant with one point it had been respected that he possessed the biggest known personal chess library on earth. His family possessed a publishing business when he was youthful. He was the principle Arbiter when Bobby Fischer defeated Boris Spassky in 1972.