guitar chord
B♭m(maj7)
Minor triad, major seventh — the tonic chord of harmonic minor.
Written the other way round it is A♯m(maj7) — the same twelve keys on a piano, a different piece of notation.
Every fingering that fits a hand
687666
moderate · barre
60366x
hard
6036xx
easy
x1322x
hard
x13221
hard · barre
What is true of it
B♭m(maj7) is B♭, D♭, F and A — 1, b3, 5 and 7 counted from B♭.
On an instrument that cannot reach all 4, the 5 goes first, in that order.
The easiest of the 5 fingerings below is 687666: 3 fingers, one of them barring the 6th fret, held at the 6th fret.
None of them uses an open string, so this chord moves up the neck unchanged — the same shape 1 fret higher is the chord a semitone above.
2 of the 5 need a barre.
Where its notes are on the neck
The brass dots are B♭, the root. Everything else is a chord tone with its degree printed in it.
With a different note underneath
B♭m(maj7)/D♭
xxbebd
B♭m(maj7)/F
10332x
B♭m(maj7)/A
x0332x
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.
B♭ in other shapes
Cm(maj7)C♯m(maj7)D♭m(maj7)Dm(maj7)D♯m(maj7)E♭m(maj7)Em(maj7)Fm(maj7)all 374