Logic Masters Deutschland e.V.

An approachable one, difficulty 2 to 3. Try not to use chains. Happy solving!!

===Rules===

Normal Sudoku rules apply.

Thermo: In the Thermometer shapes, digits must increase from the bulb towards the tip.

Killer Sum: The sums of the digits in each cages are marked at the corner of the respective cages. Digits don't repeat in a cage.

Little Killer sum: The arrows outside the grid give the sums of the digits along the indicated diagonals.

Renben: Each purple lines contain a set of non repeating consecutive digits.

The orange circle (R3C3) contains an ODD digits. Additionally, three coloured circles must have different digits.

Note: In box 1, The thermo (stared in box 4) and the renben lines have the same cells. Thermo is behind the renben line.

f-puzzle link:

f-puzzle (U.F.O.)