Partial barre
fret 3x14332
B♭aug is the B♭ augmented chord. Its notes are B♭, D and F♯. It is the same chord as A♯aug. The raised fifth adds tension. Use it briefly between more settled chords.
x14332
Numbers show frets from the low E string to the high e string; x means don't play that string.
Every B♭, D and F♯ on the first 12 frets. The filled dots are the root, B♭. Build your own shape from any nearby group.
Other B♭ chords
Other augmented chords