A Scandinavian strategic board game that gained popularity during the Middle Ages, often regarded as the regional equivalent of chess. The game features several variants that differ in aspects such as: - board dimensions: 7, 9, 11, or 13 squares - winning criteria: escorting the king to the edge or a corner of the board - king capture rules: requiring encirclement from either two or four sides - the quantity of attacking (black) and defending (white) pieces Players can enjoy the game against artificial intelligence, on a single device with another player, or online in multiplayer mode. The black attacking pieces make the first move, followed by alternating turns. All pieces move vertically or horizontally across any number of vacant squares.