Thought and Choice in Chess

abstraction actual Alexander Alekhine analysis appears argument associationism attack Bishop Black board goal calculations chess player chess thinking chessmasters combination complete considerable moves considered course decision dynamic Euwe evaluation example exchange experience experimental favorite final goal-setting grandmaster GROOT idea immediately instance introspective intuitive investigation isolated Pawn Karl Duncker King King's wing Knight on KB6 look master mate Max Euwe maximal expectancy means mental MINUTES negative proof OCTOBER 17 operations Otto Selz passed Pawns Paul Keres Pause Pawn pieces play position possible problem development problem formulations problem transformations progressive deepening protocols quantitative Queen re-investigation Reuben Fine Rook Salo Flohr schematic anticipation Section Selz Selz's solution solving method solving proposition specific structure subproblems taking on Q5 theory thinking aloud thought process threat threatens tion total goal conception transitional phases trying variation White Z₁