Antiknight XV adventure
- Anti-knight
- Kropki dots
- XV and number dots
- Little killers
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 an X sum to 10. Cells separated by a V sum to 5. Cells separated by a black dot has one digit double the other (1:2 ratio). Clues outside the grid sum the digits along the indicated diagonal, digits may repeat. No negative constraints.