Hanayama Nutcase (Level 6)

The nuts and bolts" appearance may lull you into believing this to be a straightforward puzzle, but it is a total brain drain. Inventor Oskar van Deventer presents two challenges: 1) remove the small nuts by disassembling the nutcase, and 2) change the order of the wording on the bolts from "nut-case" to "case-nut." Educationally, it strengthens critical thinking, spatial reasoning, sequencing skills, perseverance, and problem-solving ability, making it an excellent hands-on tool for developing deep analytical thinking and mental flexibility.