400 puzzles by four well-known players. Each author has carefully chosen 100 original positions, graded by difficulty and theme into four sections of 25. Wesley So presents 100 puzzles from his own recent games, many from elite events. They range from easily-overlooked but straightforward ideas to moves of great depth. Michael Adams offers positions from his files that have inspired him over the years, and includes a section of warm-ups. John Nunn challenges you to find beautiful tactics in recent games and studies, as well as some of his own career highlights. Graham Burgess has scoured his work over the years for hidden unpublished gems, and includes themed sections on opening tactics and defensive ideas. Further information about the book and a sample are available at gambitbooks.com