Logic Masters Deutschland e.V.

This is the first 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 4 appear in every row, column, and box.

Digits along a purple Renban line must form a set of non-repeating consecutive digits in any order. E.g. on a renban of length three 1-3-2 or 4-3-2 are ok, where 1-2-4 or 2-3-2 are not allowed.

Digits on the gray Thermometer are strictly increasing from bulb (circle) to tip.

Cells separated by a V must sum to 5.

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