B♭m9♭5 8-string guitar chord

How to play B♭m9♭5 on 8-string guitar

The most common way, the first shape above: lay your index finger flat across the four strings from the F♯ to the A at the 4th fret, your middle finger on the low B string at the 5th fret, your little finger on the D string at the 6th fret and your ring finger on the G string at the 5th fret. Don’t play the high B and high E strings.

From the F♯ string 4 5 4 4 6 5 x x (x: not played, 0: open)

What notes are in B♭m9♭5?

B♭m9♭5, B♭ half-diminished ninth, is B♭, D♭, F♭, A♭ and C: the root (B♭), the minor third (D♭), the diminished fifth (F♭), the minor seventh (A♭) and the ninth (C). Its formula is 1 ♭3 ♭5 ♭7 9.