Logic Masters Deutschland e.V.

For my third puzzle, I wanted to make something with lines. I had this idea of combining thermos and region sum lines and this is my second attempt at making a sudoku with this new constraint. In my opinion, the logic is not that hard and you should be able to complete the puzzle even if you’re a beginner.

Rules:

• Normal sudoku rules apply: fill each row, column and box with all digits from 1 to 9.


• Region thermo lines (light blue): 3x3 box borders divide each light blue “region thermo line” into segments with strictly increasing sums from the bulb end to the tip of the line. The position of the bulb must be determined by the solver. Example : if ‘|’ represents a region border, a valid line could be 12|4|235|39 or 456|19|31|2.


• Regular thermometer : Along a grey thermometer, digits strictly increase from the bulb to the tip.

Here is the puzzle:

Click here to play the puzzle

Hope you enjoy it! Any feedback is highly appreciated!