This is an except from Hungarian Rhapsody No.2 by Liszt from John Thompson's Grade 3 (The key signature of this section is F Major):
I don't understand why it recommends playing the E and B♭ together using fingers 1 and 2, which is quite a stretch. It seems much easier to play it with 1 and 3. Is it because B♮ is played in the beginning of the bar with finger 3?