The boulder problem is shown in the video at 5:04.
Most of the time I don't grade my boulders anymore, but people are still curious what they could be. On this one my feeling lies around 8C boulder, as it felt as the hardest boulder I ever did on pockets.
Der deutsche Kletterer Fabian Buhl kann endlich einen Haken unter sein Langzeitprojekt des 8c-Boulders Le Boa setzen.
For sure there are times when I have a certain project, then I try to focus more and also train for it. Otherwise I could not have climbed Le Boa, 8C [first and only repetition of this Fred Nicole boulder from 2011] this spring, there is just sometimes projects that are harder than my all round level, then I need to invest a bit more, but in the end it's worth it! And like that I can always try to push my personal limit in each discipline, I like to see this steady progress it keeps me motivated.