The difference on the verbal knowledge of expert chess players in tactical ability, positional judgment, and endgame knowledge

The goal of this study was to find out the differences of chess-specific verbal knowledge among expert chess players of different skill levels through think-aloud protocol. Nine (9) expert chess players with an ELO rating ranging from 1800 to 2600 were asked to verbally report their solution, evaluation, and judgment towards chess board puzzles intended to measure one\u27s tactical ability, positional judgment, and endgame knowledge respectively. The results of the study showed that there are differences in the verbalized organization of thought processes among expert chess players in Tactical Ability, Positional Judgment and Endgame Knowledge