Vier gegen Einen

One player has to defend the citadel with 16 black pawns against four allied enemy armies of seven red, blue, yellow and green pawns each. The pawns may move one space or capture (in any direction) an enemy pawn by jumping over it. The defender may not move into the citadel, unless it is under threat by an attacker. The attackers move only forward or sideways, never backward. Movement is one space on the red lines or sideways on the black lines and one or more spaces forward or backward (only the defender)on the black lines. The defender wins the game if he can occupy oll 4 spaces of the citadel in the center of the game board. The allied attackers win, if they can occupy the four spaces of the citadel. The game was published in the 1930s or 1940s.