B#dim is a diminished, spelled B#, D# and F#. In DADGAD tuning (D2 A2 D3 G3 A3 D4) the easiest shape is xxx564, which sits at fret 4, spans 2 frets and mutes 3 strings. 12 positions for it are shown below, from the nut up to fret 13.
Notes and intervals
Note
B#
D#
F#
Interval
1P
3m
5d
12 ways to play it
Ordered by how hard they are to fret, easiest first, one per position on the neck. Fret numbers are relative to the position marked beside each grid.
xxx564sits at fret 4, spans 2 frets and mutes 3 stringsx3456xsits at fret 3, spans 3 frets and mutes 2 stringsxx108910sits at fret 8, spans 2 frets and mutes 2 strings131xxxsits at fret 1, needs a barre across 3 strings at fret 1 and mutes 3 strings10913119xsits at fret 9, needs a barre across 4 strings at fret 9 and mutes 1 string1061086xsits at fret 6, needs a barre across 4 strings at fret 6 and mutes 1 stringx15131115xsits at fret 11, spans 4 frets and mutes 2 strings131513xxxsits at fret 13, needs a barre across 3 strings at fret 13 and mutes 3 strings464564sits at fret 4 and needs a barre across 6 strings at fret 4109108xxsits at fret 8, spans 2 frets and mutes 2 stringsx64564sits at fret 4, needs a barre across 4 strings at fret 4 and mutes 1 string46456xsits at fret 4, needs a barre across 3 strings at fret 4 and mutes 1 string
Keys B#dim belongs to
B#dim is diatonic to 8 of the 96 keys this app knows, playing a different role in each.