In the grand scheme of things, an F chord is not very hard at all. It is usually considered to be a difficult chord by beginner guitarists who are more used to playing open chords. An F chord cannot really be played without barring on the 1st fret, raising the low E to an F root note.
The F major chord is hard to play on guitar for beginners because it requires the player to perform a barre which is the act of pressing down multiple strings at once at the same fret with the same finger and this must be done at the part of the fretboard where the strings are at their most tense.While this can be subjective and vary depending on the player, there is one chord that is often considered to be the most difficult: the F chord. Master Of Puppets - Metallica. This song is one of the band's masterpieces we all know. It's maybe not the most challenging Metallica tune, but it is one of the hardest. Their same-titled 1986 album features it. The tune is a great example of how trash metal music can be progressive.