Archive for
- New Scientist Enigma 597 – Break-Uprithmetic on 30 December 2020
- Sunday Times Teaser 3040 – Moving Digit on 24 December 2020
- Sunday Times Teaser 3039 – Three Patterned Paving on 18 December 2020
- Sunday Times Teaser 3038 – Progressive Raffle on 11 December 2020
- Sunday Times Teaser 3037 – Prime Advent Calendar on 4 December 2020