Experience and the constant analysis of the most varied positions builds up a store of knowledge in a player's mind enabling him often at a glance to assess this or that position.
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 KotovJust as the pianist practices the most complicated pieces to improve the technique of his fingers, so too a grandmaster must keep his vision in trim by daily analysis of positions with sharp possibilities, and this applies whether he prefers such positions in his play or not.
Alexander KotovIf your opponent is short (on time), play just as you played earlier in the game. If you are short keep calm, I repeat, don't get flustered. Keep up the same neat writing of the moves, the same methodical examination of variations, but at a quicker rate.
Alexander Kotov