He sent me a note once when one of his students showed him an endgame study quiz that ran in this space, while noting casually that there was a massive flaw in one of the composer’s variations, basically ruining the whole thing. His tone was friendly and understanding, but it was a bit mortifying to have to run a correction the next week “based on information supplied by The Washington Post.”
Over the board, Kavalek like Newton and Einstein before him saved his best for first, playing one of the most anthologized games of the 20th century when he was just 15 against fellow future GM Eduard Gufeld at the 1962 World Student Team Championships.