Doublecross
- Killer cages
- Kropki dots
- Arrows
The brief
Normal Sudoku rules apply. ARROWS- Numbers on arrows sum to the number in the arrow's circle. Numbers may repeat on arrows, if other rules allow. KILLER- Numbers in cages sum to the number in the top left corner of the cage. 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.