A Square Sum Ring
- Killer cages
- Kropki dots
- XV and number dots
- Region sum lines
- Odd and even cells
The brief
- Normal Sudoku rules apply.
- Box borders divide the blue lines into segments of equal sum. Different lines may have different sums.
- Digits in a cage do not repeat and sum to the clue in the top left if given.
- Adjacent cells connected with a V must sum to 5.
- A white dot between cells indicates cells with consecutive values. Not all dots are given.
- Cells with a filled grey square must be even.