Logic Masters Deutschland e.V.

I made this one to introduce my partner to variant sudokus, so it's an image of our Tuxedo Cat, Billy, made with Thermosmeters and Arrows.

Normal Sudoku rules apply.
The dark grey circles are thermometer bulbs. Travelling away from the bulb, each digit on any attached line must be higher than the previous digit.

The open circles are connected to arrows. The sum of the values on each arrow is equal to the value in the circle to which it is attached.

Click on the image to play