Spooky Month
Rules:
- Classic Sudoku:
Every row, column and 3x3 box must contain every number from 1 to 9.
- Dutch Whispers:
Every two consecutive digits along an orange line must have a difference of at least 4.
- German Whispers:
Every two consecutive digits along a green line must have a difference of at least 5.
- Kropki:
Two digits separated by a white dot are consecutive; two digits separated by a black dot have a 1:2 ratio.
Play it online in SudokuPad.
This puzzle is also on Logic Masters Germany.