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
