Doppelgängers
- Killer cages
- Kropki dots
- Arrows
The brief
Normal Sudoku rules apply. The four Doppelgängers (3x3 pink regions) look the same, but NONE OF THEM ARE CLONES (have all nine numbers in the same locations as one another). ARROWS- Numbers on arrows sum to the number in the arrow's circle. KROPKI PAIRS- Numbers with a white dot between them are consecutive. Numbers with a black dot between them are in a ratio of 2:1. Not all possible dots are given. KILLER CAGES- Numbers in cages sum to the number in the top left corner of the cage.