" The conclusion is that in normal chess play, certain types of situation recur-certain patterns-and it is to those high-level patterns that the master is sensitive. He thinks on a different level from the novice: his set of concepts is different. Nearly everyone is surprised to find out that in actual play, a master rarely looks ahead any further than a novice does-and moreover, a master usually examines only a handful of possible moves! "

― Douglas R. Hofstadter , Gödel, Escher, Bach: An Eternal Golden Braid