Logic Masters Deutschland e.V.

This is the fifth puzzle of the NKSA Weihnachtskalender. It was created in the Impulswoche Mind-Benders 2025. Have fun and leave a comment.

Rules:

Standard sudoku rules apply: The digits 1 through 9 appear in every row, column, and box.

Kropki pairs: Digits in cells separated by a black dot are in a "Number in the dot":1 ratio. E.g. a 3 in a black dot means, that the digits in the adjacent cells are in a 3:1 ratio (1-3, 3-1, 3-9 or 9-3).

Digits in cells separated by a white dot are consecutive. Not all dots are necessarily given.

Adjacent digits along a Dutch whispers line must differ by at least 4.

Digits on Thermos are strictly increasing from bulb to tip.

play on sudokupad