Pear
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.
- Parity Lines:
Every pair of consecutive cells along a red line must contain an odd digit and an even digit.
- Kropki:
Two digits separated by a white dot are consecutive; two digits separated by a black dot have a 1:2 ratio.
- Negative XV:
No pair of orthogonally adjacent digits can sum up to 5 or 10.
Play it online in SudokuPad.
This puzzle is also on Logic Masters Germany.