Sonneveld’s 9 Piece Board Burr - Dic Sonneveld by Pelikan

This is a very nice board burr by Pelikan, originally George Miller made (prototype) versions in acrylic.

Here’s a description rom George Miller:

“This puzzle was designed by Dic Sonneveld of The Netherlands. It is made of clear acrylic .  It seems as though it would be impossible to make a board burr using 9 pieces, but Dic persisted, using a computer to test a combination of three very simple triplets. There is plenty of room inside each piece leaving enough space for the 9 pieces to come together into a burr. One would think that there would be many solutions. No, there's just one. One would think that the solution would be symmetrical. No, its asymmetrical. It is one of a kind, quite unique and fun to play with.”

Level count of 3-3-4-1-1-2-3