Logic Masters Deutschland e.V.

Normal sudoku rules apply.
A pair of adjacent digits along a red line must have opposite parity (even/odd).
A pair of adjacent digits along a thermometer must increase as they move away from the bulb end.
On a gray line, digits must be between the digits in the circles on the ends.
Digits on a blue diagonal line must not repeat along the blue diagonal line.
On a black dot, one digit is double the other.
On a white dot, digits are consecutive.
Digits separated by an X sum to 10.

Once you solve the puzzle, keep all the digits in the yellow squares and erase the rest.
Now solve it again, except all the rules are wrong

Normal sudoku rules apply.
A pair of adjacent digits along a red line must not have opposite parity (even/odd).
A pair of adjacent digits along a thermometer must not increase as they move away from the bulb.
On a gray line, digits must not be between the digits in the circles on the ends.
Digits on a blue diagonal line must repeat along the blue diagonal line.
On a black dot, neither digit is double the other.
On a white dot, digits are not consecutive.
Digits separated by an X do not sum to 10.

Solve in SudokuPad