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True Genius puzzle collection - Grecian bottle: players must use gravity, friction and the items inside the glass to remove everything from the bottle. Emptying the bottle is challenging, returning everything back into the bottle in its original state is even more difficult. > true Genius collection: a new twist on the classics. The true Genius puzzle collection line brings together classic brainteaser puzzles and links each design with an ancient civilization including China, Aztec, Rome, Greece, and Egypt. These puzzles are finished in an antique style to look as though they might actually be artifacts from long ago. The true Genius line offers a wide variety of price points, difficulty level, and solve types - filling the gaps in any store s puzzle selection or standing alone as a comprehensive collection of brain teasers.