guitar chord
F♯aug
Two major thirds stacked. Symmetrical: every note can be heard as the root.
Written the other way round it is G♭aug — the same twelve keys on a piano, a different piece of notation.
Every fingering that fits a hand
21033x
moderate
2103xx
open
25033x
hard
2503xx
easy
xx4332
hard
What is true of it
F♯aug is F♯, A♯ and C𝄪 — 1, 3 and #5 counted from F♯.
C𝄪 is a double sharp, and it has to be: every letter from F♯ upwards is used once, so the #5 cannot be written any other way.
The easiest of the 5 fingerings below is 21033x: 4 fingers, held at the 1st fret.
1 of them use open strings, which is what makes a shape quiet to change to.
1 string stays silent.
Where its notes are on the neck
The brass dots are F♯, the root. Everything else is a chord tone with its degree printed in it.
With a different note underneath
F♯aug/A♯
x10332
F♯aug/C𝄪
xx0332
An inversion is the same chord with a different note lowest. The name changes to a slash name because the bass is what a listener hears as the foundation.