Learn › B Flat Diminished Triad Inversions on Guitar: 12 Shapes
New Released in April 2026
B Flat Diminished Triad Inversions on Guitar: 12 Shapes
Bbdim triad inversions on guitar: the three notes Bb, Db and Fb on three neighbouring strings, in three positions on each of four string sets. Twelve small shapes that cover the whole neck.
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- MIDI keyboard
- Digital or acoustic piano
- Guitar
- Computer, phone or tablet
Same chord, different bottom note
An inversion just reorders Bb, Db and Fb. Bottom note Bb: root position. Bottom note Db: 1st inversion. Bottom note Fb: 2nd inversion.
Tense and unstable: it wants to move to the next chord.
Connecting the inversions
Climbing the G-B-e strings: root position (fret 3) → 1st inversion (fret 6) → 2nd inversion (fret 11). Listen to the top note, Fb, Bb, Db: it is a little melody inside one chord.
One area of the neck, near fret 8, already holds four Bbdim shapes: G-B-e strings 6-5-6; D-G-B strings 8-6-5; A-D-G strings 7-8-6; E-A-D strings 9-7-8.
Twelve Bbdim shapes, string set by string set
Each row uses three neighbouring strings and climbs the neck from the lowest shape to the highest. Mute or skip the other strings.
G-B-e strings
Root position
1st inversion
2nd inversion
D-G-B strings
2nd inversion
Root position
1st inversion
A-D-G strings
1st inversion
2nd inversion
Root position
E-A-D strings
Root position
1st inversion
2nd inversion
Practise Bbdim triads in four steps
- Learn the three shapes on the top strings first, slowly, saying the bottom note each time.
- Climb the neck through the three shapes and come back down without stopping.
- Stay near fret 8 and find Bbdim on two different string sets.
- Last, switch between Bbdim and another triad in the same area of the neck.
Small daily sessions work best: shapes stick by repetition.
All Bbdim triad frets in one table
| String set | Root position | 1st inversion | 2nd inversion |
|---|---|---|---|
| G-B-e strings | x x x 3 2 0 | x x x 6 5 6 | x x x 9 11 9 |
| D-G-B strings | x x 8 6 5 x | x x 11 9 11 x | x x 2 3 2 x |
| A-D-G strings | x 13 11 9 x x | x 4 2 3 x x | x 7 8 6 x x |
| E-A-D strings | 6 4 2 x x x | 9 7 8 x x x | 12 13 11 x x x |
Frets from the low E string to the high E string; x = string not played.
Test Bbdim with your guitar
ChordRunner listens to your guitar through the microphone: a chord name appears, you play it in any shape, and the game hears if the notes are right. A MIDI keyboard works too.
Play the demoCommon questions
What are the inversions of Bbdim on guitar?
Root position (Bb at the bottom), 1st inversion (Db at the bottom) and 2nd inversion (Fb at the bottom). On the top three strings: Root position 3-2-0; 1st inversion 6-5-6; 2nd inversion 9-11-9.
Why learn triad inversions on guitar?
They let you play Bbdim in any area of the neck with three fingers, so chord changes stay close and the top note can follow a melody.
What does a Bbdim triad sound like?
Tense and unstable: it wants to move to the next chord.
Can I practise Bbdim with a game that listens to my guitar?
Yes. ChordRunner hears your guitar through the microphone and checks the chord in any shape or inversion. A USB MIDI keyboard works too.
Your instrument is the controller.
ChordRunner is a browser game that teaches piano and guitar chords: a chord appears on screen, you play it on a real instrument, and your runner jumps. MIDI keyboard or microphone, both work.
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