Leszek II the Black
An alliance between Przemysł II and Henry IV placed Bolesław the Pious in a very uncomfortable situation, because he was a member of the Pro-Hungarian coalition of Polish princes (in addition to him, it included Bolesław V the Chaste, Leszek II the Black and Konrad II of Masovia) could not remain indifferent to this close cooperation with the Duke of Wrocław, which was the leader of the Pro-bohemian coalition (where other Silesian princes also belonged).