We often hear the terms 'positional' and 'tactical' used as opposites. But this is as wrong as to consider a painting's composition unrelated to its subject. Just as there is no such thing as 'artistic' art, so there is no such thing as 'positional' chess.
Samuel ReshevskyWhat is a weak pawn? A pawn that is exposed to attack and also difficult to defend is a weak pawn. There are several varieties: isolated, doubled, too advanced, retarded.
Samuel ReshevskyIt often happens that a player is so fond of his advantageous position that he is reluctant to transpose to a winning endgame.
Samuel Reshevsky