I'm struggling with Gdim. The way I play it is:
x | | | | | | | | | | 2 | 3 | | | | 4
I use my third finger to mute the second string but I'm not sure of the open D string. I think the chord sounds OK, but am I really playing a Gdim?
I googled Gdim and my version does not show up among the suggestions. (Tried posting to r/guitar but my post was instakilled by a modbot, yay reddit)