In the book, the rules of Superschaak (Superchess) are given. Players have freedom for several details of the game. A large collection of 50 different pieces is described, and the players should agree which of these are used. There is also a choice of board: 10 by 10, 10 by 8, 8 by 10, or 8 by 8. But there are also fixed rules, e.g., where pawn-like pieces should be at the start of the game.
The rules are clearly described. Most striking is the cover of the book, with really beautiful wooden fantasy chess pieces.
Monarch is a variant of the game, with differences at some details.