C♯m9♭5 8-string guitar chord

How to play C♯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 low B to the D at the 2nd fret, your middle finger on the low E string at the 3rd fret, your ring finger on the G string at the 4th fret and your little finger on the high B string at the 4th fret. Don’t play the F♯ and high E strings.

From the F♯ string x 2 3 2 2 4 4 x (x: not played, 0: open)

What notes are in C♯m9♭5?

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