LOT of 4 IPP Puzzles plus one
IPP anti Slide puzzle | Very unusual goal | Mr Puzzle
Very difficult 3 piece packing puzzle | IPP | Mr Puzzle
PuzzleMad: The IPP was a great success!
Plus! Puzzle! Burr Puzzle Edi Nagata IPP 30 Exchange Puzzle 🧩 | eBay
IPP38 Puzzle Exchange in San Diego, California, USA - 11th Aug 2018
LOT of 4 IPP Puzzles plus one
8 x IPP 39 exchange puzzles
Solving the Mystery of the Secret International Puzzle Party - Atlas Obscura
Jerry's Mechanical Puzzle & Brain Teaser Collection: IPP33 Exchange Puzzles
2016 Design Competition Results
Mechanical Puzzles | One Guy in IT
IPP Martian Diamond | George Sicherman | Mr Puzzle
Solving the Mystery of the Secret International Puzzle Party - Atlas Obscura
5 IPP Puzzles plus one more Lot 8
High Difficulty Puzzles Bitten Biscuits international Puzzle - Etsy
IPP21 Burr, Exchange Puzzle from Mr. Puzzle, Brian Young
Quintet in F (Exchange Puzzle IPP 31)
Oak Wood High Difficulty Puzzles Bitten Biscuits - Etsy
Circelei IPP26 Exchange Puzzle by Henrik Haak
5 IPP Puzzles Packing and Poly shapes Lot 2
IPP wooden Burr 14 piece by Brian Young – New2Play
The original B Lock By Boaz Feldman – New2Play
