IPP21 Burr, Exchange Puzzle from Mr. Puzzle, Brian Young
ZenPuzzler: Discretely Exchanging Puzzles - IPP Burr
Brian's Damn Puzzle Blog: IPP32: Puzzle Exchange and IPP Banquet
IPP Burr - Cubic Dissection – Cubicdissection
Burrliner Kruse | Altekruse plated burr | Mr Puzzle
LOT of 4 IPP Puzzles plus one
Nob Yoshigahara Puzzle Design Competition - Wikipedia
Puzzles by George W. Hart
IPP Burr puzzle | Brian Young design | Mr Puzzle Australia
IPP 32 – Day Two | Neil's Puzzle Building Blog
Jerry's Mechanical Puzzle & Brain Teaser Collection: IPP34 - Edward Hordern Puzzle Exchange
interlocking burr puzzle made from 3D printed resin
IPP Burr - Cubic Dissection – Cubicdissection
LOT of 4 IPP Puzzles plus one
Andreas Röver - Puzzles
2018 Design Competition Results
5 IPP Puzzles plus one more Lot 8
A few Exchange Puzzles from IPP34 | Neil's Puzzle Building Blog
Disentangling the Illusive IPP – Kubiya Games
CSAIL Annual Meeting 2012 Puzzle (Erik Demaine and Martin Demaine)
2017 Puzzle Design Competition Entries
Martian Diamond very difficult triangle puzzle for IPP | eBay
IPP 29 Puzzle Lot - Revised
Andreas Röver - Puzzles
