B♭7♭13 8-string bass chord

How to play B♭7♭13 on 8-string bass

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, your little finger on the C string at the 2nd fret and your ring finger on the F string at the 1st fret. Don’t play the F♯, B, E and D strings.

From the F♯ string x x x 1 x 1 2 1 (x: not played, 0: open)

What notes are in B♭7♭13?

B♭7♭13, B♭ dominant seventh flat thirteen, is B♭, D, F, A♭ and G♭: the root (B♭), the major third (D), the perfect fifth (F), the minor seventh (A♭) and the flat thirteenth (G♭). Its formula is 1 3 5 ♭7 ♭13.