Suicide Rook

In this game I played the suicide rook to get a draw in an otherwise lost position.

It usually call the "mad rook".

omg so cool

@Sarg0n Tim Krabbé calls it the rambling rook. I prefer the term desperado.

Another example is this position:
lichess.org/analysis/k7/2R5/1R6/8/8/8/5r2/5K2_w_-_-_0_1
It is a draw.
However this is a win for white:
lichess.org/analysis/k7/2R5/1R6/8/8/8/5K2/5r2_w_-_-_0_1

What is Suicide Rook ?

It's called a feral piece: if you capture it, you'll give stalemate in an otherwise won position, but if you don't capture it, it can keep checking you (next to the King if necessary) until you do. It's a piece you can't get rid of, that forces the stalemate.

a forced stalemate!!!

Perpetual check.

Actually if the opponent would move pawn instead of checking with rook then checkmate is near