Dutch Windmills
- XV and number dots
- Thermometers
- Whisper lines
- Renban lines
- Palindromes
The brief
Normal sudoku rules apply.
Along thermometers, digits must increase from the bulb end.
Digits separated by a V must sum to 5.
Brown lines are palindromes and must read the same in both directions (palindromes in this puzzle cross and don't turn).
Digits along a purple line are a set of consecutive, non-repeating digits in any order.
Adjacent digits along an orange line must differ by at least 4.