Logic Masters Deutschland e.V.

This Sudoku allows you to choose your favorite cage sum. Once you solve the puzzle, depending on the number chosen, you will get a small (and imaginary) Christmas/New Year gift from my side (See hidden comments). This is the best I can do at this time. Enjoy!!

===Rules===

Normal Sudoku rules apply. Choose a number out of the four numbers 7, 8, 12, and 13.

Killer sum: The sum of the digits in each cage is the number you have chosen.

Kropki: Empty circles join consecutive digits. Not all possible dots are given.

Thermo: In thermometer shapes digits strictly increase from bulbs to the tips.


Note: Since different solvers may choose different numbers, the solution code has been made simple. Do not cheat :)


======

f-puzzle link:

f-puzzle (Choose your favorite cage total.)

CTC link:

CTC (Choose your favorite cage total.)