Guitar chords in the key of F:
F Gm Am Bb C Dm Edim

Chord Fm7b5 (6th fret) notes: F, Ab, Eb, F and Cb. (Cb=B).

You should not play the 6th string.

This chord is played by placing a barre on fret six with your index finger.

Fm7b5 - F half-diminished minor 7th guitar chord's alternative names: Fm7-5, Fø, Fm7b5, F-7b5, Fmin7-5 and Fmin7b5. See also: Fdim and Fdim7.

Steps: 1-b3-b5-b7.
1(F), b3(G#/Ab), b5(B/Cb), b7(D#/Eb).