Normal sudoku rules apply. Digits in a cage sum to the total in the top left corner. Digits in box 5 (ie the central 3x3 box) must not see a digit of the same parity a knight’s move away. A “King's move constraint” is only applied to even digits: ie an even digit cannot repeat a king's move away from itself. Cells connected by an X sum to 10. ALL possible Xs are given. A white dot connects two consecutive digits. Not all possible dots are given.