Paco Sako - Echecs de la Paix

In Esperanto, Paco means Peace and Sako chess. In this chess game, the opponents no longer take each other's pieces. They form unions between them, creating a new tactic and another way of playing. So you can create an alliance between black madman and white rider. At that moment, the whites always move this piece like a horseman and the whites like a madman. 

The objective is no longer to checkmate but to unite with the opposing king.