The book contains many many diagrams of chess positions, useful for training purposes. Several are very easy (e.g., mate in one positions), some are harder. Also, some positions have the setup of pieces in the form of a letter of the alphabet. The book also gives the solutions to the problems, a small bibliography, and text in five languages, including English, German, French, and Hungarian.
In addition to the book, there are cutout boards and pieces, allowing the reader to play the variants, and to setup the positions.
Könemann, Köln; 1997