Logic Masters Deutschland e.V.

This is the fourth puzzle of the NKSA Weihnachtskalender. It contains dynamic fog and might be closer to the usual 1* difficulty. 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.

Digits on Thermos are strictly increasing from bulb to tip.

Digits along a purple Renban line must form a set of non-repeating consecutive digits in any order.

Adjacent digits along a green German Whispers line must differ by at least 5.

Minimum: The digit in a Minimum Cell is smaller than the digits in the four adjacent cells.

Digits in cells separated by a white dot are consecutive.

Part of the grid is covered with fog. As correct digits are placed, some fog will clear, revealing additional clues. There is always enough information in the revealed portion of the grid to place another correct digit without guessing. Digits can be placed within the fog.

play on sudokupad