King walk

In chess, a king walk, also known as a king march, steel king (Dutch:wandelkoning, literally "wanderking") or fighting king, refers to occasions where the king travels up the board, often actively involved in the mating attack against the opposing king. This is a highly unusual occurrence since the safety of the king is considered paramount, and players are recommended to keep them out of harm's way, at least until the endgame. Nevertheless, in contrast Wilhelm Steinitz, often known as the father of modern chess, was renowned for his maxim that "the king is a fighting piece". Dutch chess historian and author Tim Krabbé has documented over one hundred such games.