Anaid9 writes: Who was Da Vinci? A scientist, an inventor, an artist, and possibly...a chess master? A recent discovery of a chess journal by Luca Paccioli who was a friend and a collaborator of Da Vinci's point to the fact that some of the chess puzzles in the journal may have been drawn by Da Vinci. In fact, some of the references in Da Vinci's own manuscripts had chess references. Should that surprise us?