Weekly Challenge 153: Inverting The Lines

Create a study which shows a Lines of Action game sequence which ends with the starting position inverted in the fewest moves.
This means your end position should have black pieces on the sides (a2-a7, h2-h7) and the white pieces along the top and bottom (b1-g1, b8-g8).

Adjudication Criteria:
1. Fewest moves (plies) in your game
2. Earliest Entry

Additional Restrictions:
- Put the number of moves (ply) achieved in the forum post
- Do not edit the forum post after posting. This will invalidate your entry
- If the study chapter's moves don't match what is claimed in the forum post then the entry will be invalid

If you wish to improve your study and submit a better entry, please clone your original study into a new one, make changes in the new study and make a new forum post with the details and new study link.

This week's challenge ties in with the Lines of Action MSO tournament which takes place this Friday: playstrategy.org/swiss/Ru68Sf57

Closing Date: Monday 23rd March 1200 UTC+0