Root on A string
no fifthx4345x
C♯7♯9 is the C♯ dominant 7 sharp 9 chord. Its notes are C♯, E♯, G♯, B and D♯♯. It is the same chord as D♭7♯9. A familiar blues-rock altered dominant. The fifth is omitted.
x4345x
Numbers show frets from the low E string to the high e string; x means don't play that string.
Every C♯, E♯, G♯, B and D♯♯ on the first 12 frets. The filled dots are the root, C♯. Build your own shape from any nearby group.
Other C♯ chords
Other dominant 7 sharp 9 chords