B♭9♭5 8-string guitar chord

How to play B♭9♭5 on 8-string guitar

The most common way, the first shape above: your index finger on the A string at the 1st fret, your middle finger on the G string at the 1st fret and your ring finger on the high B string at the 1st fret. Let the D and high E strings ring open. Don’t play the F♯, low B and low E strings.

From the F♯ string x x x 1 0 1 1 0 (x: not played, 0: open)

What notes are in B♭9♭5?

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