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Folded by Alan He (age 9) from NY. Design by Alan He.
3 models inspired by Mike Naughton’s “Double Arrowhead Cube” https://bit.ly/3qxXEKP (based on Francis Ow's "Russian Puzzle Cube" https://bit.ly/3Aim8My).
1 to 3 left to right: 1:sqrt(2) rectangles for 1 & 3. Squares for 2. 1 has three oblongs per unit.
Folded by Alexey Tatarinov, age 14, from PA, USA. Design by Shuzo Fujimoto.