Cross-Check
- Killer cages
- XV and number dots
- Thermometers
- Whisper lines
- Quadruples
The brief
Normal Sudoku rules apply.
Disjoint Set: Digits must not repeat at corresponding box positions.
The digits in a cage must sum to the number printed in its corner.
Adjacent digits along a green german whisper line must have a difference of at least 5.
Adjacent cells connected with an X must sum to 10.
Digits along a thermometer must increase from the bulb end.
Digits in a white circle must appear at least once in the four surrounding cells.