Action Directe
Güllich added several grades to the grading system. In fact, with the exception of Ben Moon's "Hubble " (the world's first 8c+), Wolfgang was responsible for 4 consecutive step-ups, with the world's first 8b ("Kanal im Rücken", 1984), 8b+ ("Punks in the Gym", 1985), 8c ("Wallstreet", 1987), and 9a ("Action Directe", 1991). However, it is important to note that this exception only exists on the French grade system, while for the UIAA system that Güllich himself used, the four steps were consecutive without exception (X, X+, XI-, XI).