Octopus
- Whisper lines
- Parity lines
- Renban lines
- Odd and even cells
The brief
Normal sudoku rules apply.
Digits an equal distance from the center of a lavender line must sum to the digit on the center of that line.
The purple line contains a non-repeating set of consecutive digits in any order.
Adjacent digits along the red line must alternate in parity (odd/even).
Adjacent digits along the orange line must differ by at least 4.
A set of three sequential cells along the yellow line must contain a low [123], middle [456], and high [789] digit.
The cell with the grey circle must contain an odd digit.