Logic Masters Deutschland e.V.

Normal Sudoku rules apply. Digits along a thermometer must increase from the bulb end.

Digits along a line sum to five times the length of the line.

Each line with the same color contains the same sequence of numbers; the sequence loops and each line may start and end at any point in the sequence.

For example, if a purple line has the digits 2855 in that order, each other purple line is one of 2855, 8552, 5528, 5285, or one of 5582, 5825, 8255, 2558.

Play on f-puzzles.