Échec aux Chevaliers is the tranposition into a board game of the fights that took place in the Middle Ages between the Knights and the men-at-arms. We play with two players, even if it is possible to play with four. The object of the game is to successfully capture the opponent's citadel and stay there for an entire turn without being captured. Échec aux Chevaliers is a fairly rare game. It is indeed sought after by both board game enthusiasts and collectors of Mokarex figurines.