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