| Clue | Source | Date |
|---|---|---|
| Stroke of genius … or the theme of this puzzle | New York Times | 30 Oct 2023 |
| Flash of genius | New York Times | 31 May 2021 |
| Notion that leads to a solution | Newsday | 17 Jul 2018 |
| Start of an invention | ||
| Promising proposal | ||
| Inventive thought | ||
| Absurd notion, facetiously | ||
| Clever solution | ||
| Absurd notion, facetiously |