it is super easy, just get two rooks or queens or rook and queens one block diagnol from you and ahead you is your oppenments king. they will get trapped and make sure you move behind the two rooks or queens or what ever and make sure one more queen or rook is right behind you. it is a 3 ladder checkmate but it is king discovered and technically the king did it so it is killer king! don't just walk towards the other king other wise you will get stalemate. and don't go in front of the rook/queen Infront of you or else you broke the trap
it is super easy, just get two rooks or queens or rook and queens one block diagnol from you and ahead you is your oppenments king. they will get trapped and make sure you move behind the two rooks or queens or what ever and make sure one more queen or rook is right behind you. it is a 3 ladder checkmate but it is king discovered and technically the king did it so it is killer king! don't just walk towards the other king other wise you will get stalemate. and don't go in front of the rook/queen Infront of you or else you broke the trap