| Clue | Source | Date |
|---|---|---|
| Science of deciphering codes (12) | ||
| The science of codes and ciphers | The Guardian Quick | 08 Dec 2023 |
| The science of codes and ciphers (12) | ||
| Science of deciphering code | Family Time | 20 Mar 2022 |
| Art of codes | The Times Concise | 02 Nov 2020 |
| The making and cracking of codes | The Times Concise | 26 Apr 2017 |
| The characters in this have something to hide | The Telegraph Toughie | 24 Feb 2016 |