| Clue | Source | Date |
|---|---|---|
| Like many Russian housing blocks | New York Times | 07 Dec 2025 |
| 1922-1991, in Russian history | Universal | 22 Jul 2025 |
| Czarism follower | Newsday | 10 May 2025 |
| Like the name 'Leningrad' | New York Times | 01 Sep 2015 |
| Like the name "Leningrad" | ||
| Sputnik launch time |