I have never seen a clear square before. Only black and white.
If you could move any piece to any open square on the board for your first move, where would you go?

Maybe Raf3 or Rag3?
Anything too advanced is just going to lose time retreating. At least that gets another piece into the attack that would take a long time to get there under normal circumstances.

Howabout 1. Bg5? kicking off the Trompowsky early.
If black plays 1...f6 you've sortof succeeded in weaking his kingside?

the strongest move for this will most likely be a pawn move.. just one that secures everything well.. probably like 1.e6 or something..

Maybe Raf3 or Rag3?
Anything too advanced is just going to lose time retreating. At least that gets another piece into the attack that would take a long time to get there under normal circumstances.
I agree.
I've thought about it, but I really can't think of any really strong move.
This is assuming you MUST move the piece to a clear square, and your second move will have all the regular rules applied to it.
What do you think?