Pavel's Puzzle Blog: International Puzzle Party (IPP) Archives
CSAIL Annual Meeting 2012 Puzzle (Erik Demaine and Martin Demaine)
IPP 29 Puzzle Lot - Revised
Plus! Puzzle! Burr Puzzle Edi Nagata IPP 30 Exchange Puzzle 🧩 | eBay
5 IPP Puzzles plus one more Lot 8
Puzzles by George W. Hart
Andreas Röver - Puzzles
Jerry's Mechanical Puzzle & Brain Teaser Collection: IPP33 Exchange Puzzles
Disentangling the Illusive IPP – Kubiya Games
IPP 32 – Day Two | Neil's Puzzle Building Blog
Puzzle Design Competition HOME
Martian Diamond very difficult triangle puzzle for IPP | eBay
Puzzle Auction - IPP Puzzles
High Difficulty Puzzles Bitten Biscuits international Puzzle - Etsy
IPP Burr - Cubic Dissection – Cubicdissection
Jerry's Mechanical Puzzle & Brain Teaser Collection: IPP34 - Edward Hordern Puzzle Exchange
Nob Yoshigahara Puzzle Design Competition - Wikipedia
2017 Puzzle Design Competition Entries
PuzzleMad: The IPP was a great success!
Andreas Röver - Puzzles
Solving the Mystery of the Secret International Puzzle Party - Atlas Obscura
Brian's Damn Puzzle Blog: IPP32: Puzzle Exchange and IPP Banquet
