Logic Masters Deutschland e.V.

Normal Sudoku rules apply.
Digits along thermometers increase from the bulb.
The thin purple line (around the edge of the wings) is a zipper line. Pairs of digits equidistant from the center of the line, which is marked with a purple circle, sum to the same total, which appears in that center cell.
Adjacent digits along the green line differ by at least 5.
The digits along the thicker pink line (inside the left wing) form a set of non-repeating, consecutive digits, in any order.
The large orange circles contain odd digits.
The dots between cells indicate the difference between the digits in those cells. Orange dots denote an odd difference. Blue dots denote an even difference.
The vertically symmetrical dots (appearing on the matching part of the other wing) represent the same difference. (e.g. If the difference between r2c1 and r2c2 was determined to be 4, then r2c8 and r2c9 would also have a difference of 4.)

Try "Spotted Butterfly" here:
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