Der praktizierende Stoiker
2021
Die sokratische Methode
2022
The Socratic Method
2021
The Practicing Stoic
2018
Predator at the Chessboard: A Field Guide to Chess Tactics: Book I: Introduction the Double Attack the Discovered Attack
2011
Predator At the Chessboard: Book II: A Field Guide To Chess Tactics The Pin and the Skewer Removing the Guard Mating Patterns
2011