This first version of the puzzle is called The Knight: Normal sudoku rules apply. Digits joined by a white dot are consecutive. Starting from the bulb, adjacent digits on a thermo increase. Adjacent digits on a green line differ by 5 or more. The puzzle can also be solved assuming all clues are liars (“The Knave”): Normal sudoku rules apply. Digits joined by a white dot are NOT consecutive. Starting from the bulb, adjacent digits on a thermo do NOT increase. Adjacent digits on a green line do NOT differ by 5 or more.