Dark Forest chess

The Dark Forest consists of the most outer ranks and files of a 10x10 chessboard.

No piece, except for the Evil Wizard, can enter or leave the Dark Forest.
The Evil Wizard moves and captures like a Queen that is limited to 3 squares
The Evil Wizard captures a piece by occupying its square, and moving it to any random vacant square
- in the Dark Forest if the piece was on the active board
- on the active board if the piece was in the Dark Forest

Pieces in the Dark Forest can just dwell there until they are brought back. They cannot capture other pieces in the Dark Forest.
So for active gameplay they are of no use, that's why you would want to rescue your banished pieces.
It can make sense to move your piece through the Dark Forest, usually to get it on a square where your allied Evil Wizard can rescue it more easily.

There are two ways to win this game:
1. Mate the King
2. Banish the King to the Dark Forest, and then capture the enemy's Evil Wizard