Open chords on microtonal guitars (15, 17, 19, and 22-tone)

Here's an explanation of the differences between E, A, D, G, and C chords on each of these instruments!

15-tone equal temperament showcases Blackwood tuning, which allows a closed circle of 5 major chords to exist! And we can see this analogously shown in the positions, as in this video.

17-tone equal temperament has diatonic logic, though its major and minor thirds are more off the mark of 5/4 (major thirds) and 6/5 (minor thirds) than 12-equal's. Its open chords are probably the easiest, because they almost look the same with their fret-wise distances, as a self-contained shape.

19-tone equal temperament also has diatonic logic, and its major and minor chords, like 22's, probably pass as significantly more in-tune with just major and minor triads than 15 or 17. The diatonic semitone, being 2 frets, causes a lot of the shapes to feel pretty stretched compared to 12.

22-tone equal temperament has diatonic logic, but its regular diatonic scale (5 large steps, 2 small) doesn't get us major and minor - major thirds have to be lowered by 1\22 while minor thirds are raised by 1\22. This means that the 22-tone open chords have the most additional non-regular "rules" attached to their shapes compared to the others here.

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