Unity
- Kropki dots
- XV and number dots
- Thermometers
- Renban lines
- Palindromes
- Negative constraint
The brief
Normal sudoku rules apply.
Grey lines (the “2” and the “square-root”) are palindromes which read the same in both directions.
Digits on the pink line form a consecutive sequence in any order.
Digits on the “4” thermometer must increase from the bulb end.
Digits separated by an X sum to 10; ALL such X’s are given.
Black dots separate digits where one is double the other; not all such dots are shown.