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Martian Diamond very difficult triangle puzzle for IPP | eBay
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![The 38th International Puzzle Party. IPP 38 San Diego [cover title] by Baxter, Nick, et al.: (2018) | Rulon-Miller Books (ABAA / ILAB)](https://pictures.abebooks.com/inventory/31419530274.jpg "The 38th International Puzzle Party. IPP 38 San Diego [cover title] by Baxter, Nick, et al.: (2018) | Rulon-Miller Books (ABAA / ILAB)")
The 38th International Puzzle Party. IPP 38 San Diego [cover title] by Baxter, Nick, et al.: (2018) | Rulon-Miller Books (ABAA / ILAB)
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IPP21 Burr, Exchange Puzzle from Mr. Puzzle, Brian Young
