Under the Surface de Jan Markos
"The most significant difference between a grandmaster and a club player is not simply that the grandmaster calculates more accurately, but rather that he sees more deeply. This book invites you beneath the surface, where you can learn to navigate the depths of chess. Jan Markos shows how a strong player perceives chess, which features of a position he focuses on, and how he thinks at the board.
The author’s philosophy is that understanding chess brings pure happiness, and he would like to share this happiness with you."