Sit there for five hours? Certainly not! A player must walk about between moves, it helps his thinking.
Alexander KotovOnce there is the slightest suggestion of combinational possibilities on the board, look for unusual moves. Apart from making your play creative and interesting it will help you to get better results.
Alexander KotovIf a chess statistician were to try and satisfy his curiousity over which stage of the game proved decisive in the majority of cases, he would certainly come to the conclusion that it is the middlegame that provides the most decisive stage.
Alexander KotovAfter a great deal of discussion in Soviet literature about the correct definition of a combination, it was decided that from the point of view of a methodical approach it was best to settle on this definition - A combination is a forced variation with a sacrifice.
Alexander Kotov