Construct Puzzle - Interlocking 24 Piece Burr PuzzleBased on an original 1897 design by Edward Nelson. Contains 24 non identical interlocking burr pieces. Requires finding a central piece that unlocks the shape. Challenges you to reconstruct the same form after collapse. Uses a slide and lock mechanism demanding a precise reassembly order. Suited for advanced puzzlers seeking a lengthy, focused challenge. Builds focus, patience, and spatial reasoning skills. Provides a tactile break from constant