IPP wooden Burr 14 piece by Brian Young – New2Play
Puzzle Auction - IPP Puzzles
CSAIL Annual Meeting 2012 Puzzle (Erik Demaine and Martin Demaine)
High Difficulty Puzzles Bitten Biscuits international Puzzle - Etsy
2016 Design Competition Results
Jerry's Mechanical Puzzle & Brain Teaser Collection: IPP34 - Edward Hordern Puzzle Exchange
Solving the Mystery of the Secret International Puzzle Party - Atlas Obscura
The Pentagon Tiles. IPP 32 Packing Puzzle by Marcel Gillen Design by René Dawir | eBay
Solving the Mystery of the Secret International Puzzle Party - Atlas Obscura
2017 Puzzle Design Competition Entries
Neil's Puzzle Building Blog | The journey from puzzler to puzzle creator. | Page 2
IPP Martian Diamond | George Sicherman | Mr Puzzle
Plus! Puzzle! Burr Puzzle Edi Nagata IPP 30 Exchange Puzzle 🧩 | eBay
Circelei IPP26 Exchange Puzzle by Henrik Haak
IPP21 Burr, Exchange Puzzle from Mr. Puzzle, Brian Young
Quintet in F (Exchange Puzzle IPP 31)
Puzzle Design Competition Archives | JL Puzzles
Andreas Röver - Puzzles
IPP anti Slide puzzle | Very unusual goal | Mr Puzzle
IPP 29 Puzzle Lot - Revised
Mechanical Puzzles | One Guy in IT
Puzzle Auction - IPP Puzzles
LOT of 4 IPP Puzzles plus one
Brian's Damn Puzzle Blog: 2012 New York Puzzle Party (Part 6)
