Black Sheep
- Killer cages
- Kropki dots
- Oil and water cages
The brief
Normal sudoku rules apply.
Each cage is either full of "oil" (even digits), full of "water" (odd digits), or a mix of both. In all cases, each "row" within a cage is of just one type (oil or water). Oil floats on water, so even digits will always be in rows above odd digits in mixed cages.
Digits in cages do not repeat.
White dots separate consecutive digits. Black dots separate digits where one is double the other.