Photo of a jigsaw puzzle of a human (model) brain, with a jigsaw puzzle piece missing.

- Image ID: C4ECH3
Martin Bond / Alamy Stock Photo
Image ID: C4ECH3
Photo of a jigsaw puzzle of a photo of a (model) brain, with a jigsaw piece missing. [Note: jigsaw puzzle is real - i.e. it's not a digital pattern.] Jigsaw puzzle photo of brain also by Martin Bond.