Gdim

G1B♭♭3D♭♭5

Two minor thirds stacked. The fifth is diminished, so it cannot be dropped without losing the chord.

on guitar on piano the scale

Every fingering that fits a hand

Fig. 2

0131

open

Fig. 3

0764

easy

Fig. 4

x764

easy

Fig. 5

ca9a

hard

Fig. 6

ca9x

easy

What is true of it

Gdim is G, B♭ and D♭ — 1, b3 and b5 counted from G.

The easiest of the 5 fingerings below is 0131: 3 fingers, held at the 1st fret.

1 of them use open strings, which is what makes a shape quiet to change to.

Where its notes are on the neck

Fig. 7 — first 12 frets

The brass dots are G, the root. Everything else is a chord tone with its degree printed in it.

With a different note underneath

first inversion

Gdim/B♭

3131

second inversion

Gdim/D♭

x131

An inversion is the same chord with a different note lowest. The name changes to a slash name because the bass is what a listener hears as the foundation.

G in other shapes

Gmajor Gmminor Gaugaugmented G5power chord Gsus2suspended second Gsus4suspended fourth

Cdim C♯dim D♭dim Ddim D♯dim E♭dim Edim Fdim all 374