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Last modified May 12th, 2024
Contact email address: gibell-at-comcast-dot-net
| Year | IPP | Where | Exchange puzzle | Assistant | Made from | Manufactured by | Saved | Extra | Demo | Broken |
|---|---|---|---|---|---|---|---|---|---|---|
| 2010 | 30 | Osaka | Screwy Octahedron | none | nylon | 3D printed by Shapeways | 4 | 0 | 0 | 0 | 2011 | 31 | Berlin | Three Piece Whatsit | none | wood | Bernhard Schweitzer/Pelikan | 3 | 1 | 1 | 1 |
| 2012 | 32 | Washington DC | Lomino Cube 4 | Allison Bell | acrylic | laser-cut by Ponoko | 3 | 0 | 1 | 0 |
| 2013 | 33 | Tokyo | Octetra | Bret Rothstein | nylon | 3D printed by Shapeways | 1 | 0 | 0 | 0 |
| 2014 | 34 | London | Orchid Pennyhedron | Henry Bell | wood | Stephen Chin | 3 | 0 | 0 | 0 |
| 2015 | 35 | Ottawa | Housing Crunch | Allison Bell | wood | laser-cut by OrangeKat, LLC | 3 | 0 | 0 | 0 |
| 2017 | 37 | Paris | Clock Solitaire | Esther Brady | wood | Creative Crafthouse | 6 | 8 | 2 | 0 |
| 2018 | 38 | San Diego | Pyradox | Esther Brady | wood and laminated bamboo | me | 3 | 11 | 0 | 0 |
| 2019 | 39 | Kanazawa | Progressive Pyramid | Paul Dudding | wood and acrylic | me | 3 | 0 | 0 | 0 |
| 2020 | 39⅓ | n/a | Melting F | n/a | PLA and acrylic | me | 3 | 32 | 0 | 0 |
| 2021 | 39⅔ | n/a | Flippe Ball | n/a | PLA | me | 50 | 50 | 0 | 0 |
| 2023 | 40 | Jerusalem | Broken Burr | Rick Eason | PLA | me | 40 | 40 | 0 | 0 |
| 2024 | 41 | Houston | Dr. Bell's Curiously Warped Mints | Bret Rothstein | PLA | me | 30 | 30 | 0 | 0 |
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