THE ULTRA KING: when the king reaches the 8th file, it promotes and moves like a Queen and a Knight
Invent the new worst/most useless chess piece ever!

The backwards pawn: It moves like a normal pawn, But it can only move backwards, if the pawn reaches the 1st or 8th rank, it can promote into a King, or a normal pawn.

I have a new piece. It is called the friendly pawn. It moves like a king and can't be captured. If any of the pieces who are standing near this pawn is not moved in the next 2 turns, the pieces will join the friendly pawns side. (It can be putten whenever the side who took it decides)

The friendly pawn. Each time a piece gets near him, the piece becomes part of the team with the pawn who took the piece. (You can put it where you want when your turn comes).

I have a new piece. It is called the friendly pawn. It moves like a king and can't be captured. If any of the pieces who are standing near this pawn is not moved in the next 2 turns, the pieces will join the friendly pawns side. (It can be putten whenever the side who took it decides)

The Special Forces Operator. Can leave and reappear on any exterior square, capturing any piece one or two squares away in any direction. Particularly effective when coming in behind the opponent's back rank. If captured itself, it be disavowed by its player.

Ice: Starts on i1,i8 and gets placed on any adjacent square with no piece on it each turn.
Penguin. Moves like a king. Starts on i1,i8. Can only move on ice.
Pieces other than the penguin cannot move on ice.
the nuke: it destroys every piece in a 5 block radius that is yours; no effect on opponents piece... takes up 3×3 block
sniper, replacing the queen, can be captured by any piece other than king, can kill any piece in a 2 block radius of itself, cotrolled by the enemy
The "01000100 01100001 01100101 01110100 01101000 ". It requires attention every turn, it will make the worst "opinings" ever
The checkers board. It's on the back side of the chess board but nobody used it