Logic Masters Deutschland e.V.

F-Puzzles
CtC

tl;dr: All clues are standard as defined in F-Puzzles, with the slight cosmetic tweak that the clone cells are blue instead of gray. But, just so there's no confusion...

Normal sudoku rules apply.
The blue shaded cells are clones (i.e. they must contain the same digit).
The digit in the cell with a gray circle must be odd.
The digit in the cell with a gray square must be even.
The digit in the cell with arrows pointing outward must be greater than its orthogonal neighbors.
The digit in the cell with arrows pointing inward must be less than its orthogonal neighbors.
On the thermometer, digits increase from the bulb.
Digits on the arrow must sum to the number in the connected circle, and can repeat if allowed by other rules.
The gray line is a palindrome, which contains the same sequence of digits in either direction.
The purple line contains a non-repeating set of consecutive digits in any order.
Along the green line, adjacent digits must have a difference of at least five.
Cells separated by a rook's move (in chess) cannot contain the same digit.
The cage shows the sum of its digits.
The clue outside the grid with an arrow shows the sum of the digits along the indicated diagonal.
The other clue outside the grid is the sum of the digits between 1 and 9 in that row.
Digits inside the white circle must appear in one of the four cells surrounding that circle.
Digits in the cells separated by a V must sum to 5.
Digits in the cells separated by an X must sum to 10.
Digits in the cells separated by a white dot are consecutive.
Digits in the cells separated by a black dot have a 1:2 ratio.
Exactly one of these rules is merely an attempt to be funny (although it is, technically, still a valid rule).