I’ve long dreamt of delivering a “super checkmate”.
Imagine that as his dying wish, when in checkmate, the king can magically transport himself to any open square on the board.
What is the board configuration which minimizes the number of squares he can safely teleport to? Is it possible for there to be no safe squares, so the king’s wish can’t save him?
Of course, we can imagine somehow the opponent promoted all his pawns to queens along the back rank, so every square is covered, but this configuration is not achievable without having drawn along the way (I believe; but prove me wrong!).
So I’m looking for a practical configuration that can be achieved naturally where the last move is checkmate.
Bonus points for each square that is under attack more than once.