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I'd like to make an addition to the answer by @RoryAlsop. Namely the case where only ONE end of the rope is used. Next to descending on both rope-ends at the same time, it's also possible to do it...
Answer
I'd like to make an addition to the answer by @RoryAlsop. Namely the case where only ONE end of the rope is used. Next to descending on both rope-ends at the same time, it's also possible to do it...