Anyone who wishes to learn how to play chess well must make himself or herself thoroughly conversant with the play in positions where the players have castled on opposite sides.
Alexander KotovOnce upon a time supporters of the Steinitz-Tarrasch school had a very high opinion of a queen-side pawn majority. Modern strategy on the other hand categorically denies that such a majority is an independent factor of any importance.
Alexander KotovThe main thing that develops positional judgement, that perfects it and makes it many-sided, is detailed analytical work, sensible tournament practice, a self-critical attitude to your games and a rooting out of all the defects in your play.
Alexander Kotov