Empty the pieces from the tray and put them back. br This 7 piece-puzzle is a real challenge even for the experts. br Its name describes itself. br br The 7 Pieces Nightmare is a formidable wooden puzzle that will push your problem-solving skills to the limit. With its deceptively simple yet intricate design, this challenging puzzle offers hours of frustration and satisfaction for dedicated puzzle enthusiasts. br br Difficulty: Expert 5/5