(born in 1972) is a school headmaster in Hamburg and for many years has been active as a licenced chess trainer. He teaches all, from primary pupils to pensioners and trains young players for the youth Bundesliga. He initiated the official school project "Chess instead of maths" and in 2009 was awarded the German Chess Prize of the German Chess Federation. With the series of programs "Fritz und Fertig" (Terzio / ChessBase) he planned the internationally acclaimed and prize-winning chess learning software for children, which has gone on to four volumes and has been translated into 17 languages. His motto: "See chess as a whole and learn about the charm of chess one step after the other".