@mbonsma@mastodon.social Great research! Tonight I felt like doing a jigsaw, so I did some research of my own with a puzzle with nontraditional piece shapes. Here's a Geode puzzle from Nervous System. Unassembled, the pieces are loosely packed into rectangle about 27✕30cm. Area 810 cm². Assembled, it's roughly a circle of diameter 21cm. Area 346cm². Ratio: 2.34. Do with that whatever you want. But do try a Nervous System puzzle. They're different!