The triumph of the analytical movement, which formed in the '30's and '40's, was precisely what earned the Soviet masters the acclaim of chessplayers the world over. Unfortunately, it must also be noted that, for today's chessmasters, the watchword is practicality.
Mikhail BotvinnikCapablanca's phenomenal move-searching algorithm in those early years, when he possessed a wonderful ability for calculating variations very rapidly, made him invincible.
Mikhail Botvinnik