The Greyscale Wednesday Cube is an engaging problem-solving brain teaser that captivates both kids and adults alike. Designed in six shades of gray, this puzzle nurtures critical thinking, enhances spatial awareness, and improves concentration skills, all while offering a stylish touch to your desk decor. Perfect for budding mathematicians and fans of the 'Wednesday' series, it encourages hours of fun with a side of educational value. 8+ years