Antiknight fog adventure
- Killer cages
- Anti-knight
- Kropki dots
- Whisper lines
The brief
Normal sudoku rules apply. Place the digits 1-9 once each in every row, column and 3x3 box. Cells separated by a knight's move (in chess) cannot contain the same digit. Cells separated by a black dot has one digit double the other (1:2 ratio). Digits in a dotted cage without repeat sum to the total given in the top left corner of the cage. Adjacent digits along a green line must differ by at least 5. No negative constraints.