| Nagelbrett Nagelbrett. A more challenging version of the Mini Pins puzzle (also by Jean-Claude Constantin). There are three obstacles to replacing the pieces back into the frame:1) The usual challenge of a packing puzzle2) The presence of the square-shaped gap in the middle of the puzzle3) The metal pins mean that the entire set of pieces, once assembled correctly relative to each other, must be correctly oriented relative- Nagelbrett. |
