In this article, we briefl y survey studies of the nature of expertise, and we present the results of research directed at evidence of the complicated nature of expertise, which is most eff ectively seen in experts' use of a transfer mechanism. The phenomenon of the transfer of verbalized operational senses (VOS) is analyzed and is investigated on the basis of the sense theory of thinking, as proposed by Tikhomirov (1969, 1984). It is shown that VOS transfer manifests itself in diverse forms. It seems to be dependent on the factors of chess position and the age and skill level of the player. Diverse forms of transferring are associated with a change in separate indices of VOS volume, structure, depth, and degree of consciousness in a connected position. VOS transfer is found more in skilled than in unskilled chess players; skilled players demonstrate selectivity of search in a connected position. VOS transfer is associated not simply with the repetition and copying of some forecasts, which give the direction of search, but also with using and transforming the results of previous verbal searches.