Logic Masters Deutschland e.V.

I think the difficulty is between 3 and 4. Your ratings are welcome. Happy solving!!

===Rules===

Normal Sudoku rules apply.

Anti-Knight: Cells separated by a chess knight's move don’t have repeated digits.

Consecutive Thermo: Along the thermometers, digits increase consecutively from the bulb, eg 456.

Killer Sum: The sum of the digits in the outline cage is 16.

Lines and Inequality: The yellow lines contain repeated digits. Digits don’t repeat in blue lines. Inequality sign points toward lower of the two digits.

1-8 rule: Any 3*3 box marked with an empty circle has the digits 1 and 8 orthogonally connected. All such circles are given.

===Note===

Note that the restriction on 1 and 8 is only within each 3*3 boxes. Across two different boxes they may or maynot be connected orthogonally.

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f-puzzle link:

f-puzzle (Perpetual Motion 2)