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Neil's Puzzle Building Blog | The journey from puzzler to puzzle creator. | Page 2
Plus! Puzzle! Burr Puzzle Edi Nagata IPP 30 Exchange Puzzle 🧩 | eBay
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Pavel's Puzzle Blog: International Puzzle Party (IPP) Archives
5 IPP Exchange Puzzle, 2000-2002
IPP38 Puzzle Exchange in San Diego, California, USA - 11th Aug 2018
