Recently, my friend Christopher came up with a chess variant he called "Towers Chess".
Standard Chess pieces are used. There is one new piece, the Tower. Towers are neutral and can only be pushed or pulled. See the Rules.
Standard FIDE rules apply, with the following exceptions:
To win, you must move as many towers to the king’s position as possible (see below). If you are next to a tower, you may move it by moving backwards or "pushing" it (moving to the position of it while it moves forward). You can only push or pull one space.
Each can move a different amount of towers at once. Knights cannot move towers. Bishops and Pawns can move two towers while Rooks can move one. See diagram below for bishop pulling-pushing.
You can use the standard 8x8 board and Chess pieces, but you need eight "towers" pieces, possibly high pawns.