Logic Masters Deutschland e.V.

The idea comes fromGarford's puzzle

Standard sudoku rules applies. Fill the grid with numbers from 1 to 9 so each digit occurs exactly once in every row, column and 3x3 box.

Numbers on the thermometer strictly increase until the spilt. When a thermo spilts, it create two new thermo. The sum of numbers at the beginning of all new thermos must equal the number on the preceding "parent thermo". Think of it as a bunch of thermos connected by arrows, that'll help.

This puzzle is made by Old Miles from China. And thanks, RockyRoer, for pointing out those who are searching for sudoku puzzles to do this time of year are probably left out this Valentine's day.

Some back story of this puzzle that might interested you. It's create a long time ago, like one day after Garford's puzzle, just for this day. And the rules changed. I original thought was the sum has to be larger than the spilt, and it is way too hard for me to solve. So equal it goes.