In this brain-bending puzzle game, your goal is to place the stacking pieces on the board following a set of placement rules. For example, the rules may specify how many pieces of each color you must use and where a color must be placed relative to another color. With over 200 challenges in four difficulty levels and a compact case, this game provides hours of puzzle-solving fun, virtually anywhere. Play solo or pass the game around to challenge your family and friends. Put your logical thinking skills to the test!