| Clue | Source | Date |
|---|---|---|
| Cognitive ability improver | LA Times Daily | 25 Dec 2025 |
| Sudoku or anagrams | New York Times | 22 Jul 2022 |
| Fun activity that stimulates your mind | The Washington Post Sunday | 30 May 2021 |
| Crossword, e.g | New York Times | 03 Jan 2015 |
| Crossword, e.g. |