The Chess Endgame Study: A Comprehensive Introduction Second Edition

The endgame study, like the chess problem, eliminates over-the-board competition to concentrate on an invented endgame position carefully plotted to fox, bewilder, challenge, and otherwise stimulate the solver. Unlike problems, studies do not stipulate the number of moves to the solution; they demand a greater knowledge of endgame theory, thus becoming useful tools for actual players while giving "studyists" self-contained epiphanies of compositional art.
A. J. Roycroft, founder of the Ches...