| Shape-shifting puzzles |
The Atlantic |
07 Sep 2025 |
| Chinese puzzles with seven pieces |
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| Seven-piece puzzles |
New York Times |
17 May 2024 |
| Geometric puzzles |
Eugene Sheffer |
23 Jan 2023 |
| Squares cut into seven pieces, used to form figures |
The Times Specialist Sunday |
10 Apr 2022 |
| Geometric puzzles |
Eugene Sheffer |
11 Mar 2021 |
| Puzzles with seven pieces |
Universal |
07 Sep 2019 |
| Puzzles with seven pieces |
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| Puzzle pieces are brown and have little weights, I hear |
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| Time to get mixed up letters, but not advanced puzzles |
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| Seven-piece puzzles |
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