Roots of Positional Understanding
The Roots of Positional Understanding, by IM Jeremy Silman.
Are you ever at a loss for what to do when there are no immediate tactics in sight? If so, then you need to learn the basics of positional play. The master seems to optimally place his pieces with effortless ease where they coordinate well and control key lines and squares. This is because he sees the board as a structural entity.
(Initial release date of November 20, 1998)