Archive for
- New Scientist Enigma 938 – Trios of Primes on 21 December 2021
- Sunday Times Teaser 3091 – Birthday Money on 17 December 2021
- Sunday Times Teaser 3090 – Main Line on 10 December 2021
- Sunday Times Brain-Teaser 889 – Counting the Hours on 8 December 2021
- Sunday Times Teaser 3089 – An Old Square on 3 December 2021