Green Woodpecker
- Kropki dots
- Region sum lines
- Whisper lines
- Odd and even cells
The brief
- Normal sudoku rules apply.
- Adjacent digits on a green line have a difference of at least 5.
- Adjacent digits on a red line have different parity (one is odd, the other is even.)
- The blue line is divided by a box border into two segments with the same sum.
- The black dot separates two digits with a 1:2 ratio (one is double the other.)
- A digit on a yellow circle is odd.
