Tactical 'trapdoor' game for two players consists of cylindrical containers with lids with invisible pivot axis

摘要

The game consists of several cylindrical or cube-shaped hollow bodies (1) with asymmetrical lids (2). The pivot axis (3) for each lid is not visible. Each lid has four surface markings (5), which two each on the areas marked by the invisible pivot axis. A support (4) under the lid is positioned to support the larger of the two areas.