Nalle Hukkataival climbed the sit-start to Bügeleisen (V15+) in early May, after completing the third ascent of Klem Loskot’s stand-start of the problem (V14) in April 2013.
“It could be the hardest problem I've climbed so far!” Hukkataival told Rock and Ice
in this interview
. “It's hard to say how much the weather contributed, but knowing how good the boulder is, I'm sure it won't be too long until more people will try it.”
Hukkataival has over 100 FAs this year alone in countries including Australia, Finland, France, Switzerland, Sardinia, Austria and the US.
Here is the video of Hukkataival on what could possibly be the hardest boulder problem in the world.