Cognitive Chess - Konstantin Chernyshovaperback, 312 pages, Russell Enterprises 2021 To improve and succeed, a chessplayer must be able calculate precisely and visualize prospective positions. This is easier said than done. While pondering the next move, a chessplayer frequently keeps replaying the same melody in his mind, thus falling into a kind of trance. This book by Russian grandmaster Konstantin Chernyshov is designed to improve your visualization and calculation skills. With 500