• Real Wood: These extremely hard puzzles for adults use eco-friendly wood with a distinct smell and hand feel. This advanced wooden puzzle is durable and fun to handle
• Complex: These difficult puzzles for adults feature a complex design and over 100 pieces. This mind bending wooden jigsaw puzzle offers endless hours of fun trying to solve it
• Challenging: These difficult wooden puzzles for adults do not have any pictures or paint on them. The pieces of the impossible puzzle all closely resemble each other for more challenge
• Brain Teaser: This hard puzzle for adults presents a mind bending puzzle to do alone or as part of a group. This super hard wood puzzle offers endless playability
• Laser Cut: This really hard jigsaw puzzles for adults are laser cut for precise pieces. There are no gaps when the puzzle is assembled, and the pieces are truly detailed