52 weeks of setting joy
- Killer cages
- Kropki dots
- Thermometers
- Little killers
- Quadruples
The brief
- Normal Sudoku rules apply. Place the digits 1-9 in each row, column and box without repetition.
- Thermo: Digits on grey thermos must increase from the bulb to the tip.
- Cages: Digits in cages must sum to the number in the top left corner of the cage.
- Little Killer: Clues outside the grid with an arrow are the sum of the digits in the cells along the indicated diagonal. Digits may repeat along these diagonals if allowed by other rules.
- Quadruples: Digits in a Quadruple circle must be placed at least once in the four cells touching that circle.
- Kropki Pairs: Digits separated by a black dot must be in a 2:1 ratio. Digits separated by a white dot must be consecutive.