sentences:  The greatest technical difficulty in the first movement is the 3 pages of continuous, rapid leaps in the form of 3-note chords stretched out over two octaves in 8th note triplets in the left hand, sometimes even surpassing two octaves, accompanied by quicksilver 8th note rapidly leaping triplet octaves, in the right hand, all at a tempo of presto.The final cadenza of the fourth movement is very difficult, containing the typical, very awkward fast runs, with big leaps and passages requiring 4th finger independence.Arguably the most difficult section, albeit a very short one, is a series of quick leaps, first in the left hand in the stride piano style, and then in both hands - with the second-to-last leap spanning three octaves in the left hand and two octaves in the right hand, followed immediately by the final, fast leap, spanning four octaves in the left hand and two octaves in the right hand - at the very end of the piece.