Option to move unplayed pieces above/below the board

[Olexorus]

Is your feature request related to a problem? Please describe.
On a smartphone screen, the unplayed pieces take up valuable horizontal space, so the board is smaller than it needs to be.

Describe the solution you'd like
Adding an option (or maybe even making it the default on small screens) to move the unplayed pieces somewhere else than next to the board would help. E.g. rotating them 90° and putting them above and/or below the board, where there's plenty of unused space.

Describe alternatives you've considered
There's already an option to hide unplayed pieces entirely, but that's not an ideal solution imo.

Additional context
Here's a screenshot to clarify what I mean: