Logic Masters Deutschland e.V.

Normal sudoku rules apply (fill each row, column, and 3x3 box with the digits 1-9 once each).

Kropki dots: Digits in cells separated by a black dot have a 1:2 ratio. Not all dots are necessarily given.

Cages: the sum of the digits inside each cage is equal to the small number in the top left corner.

Thermometers: digits on thermometers increase from the bulb.

German whispers: along the green line, digits differ from their neighbors by at least 5.

Arrows: the sum of the digits along an arrow is equal to the digit in the connected circle.

Quadruple circles: a digit inside a white circle appears in at least one of the four cells surrounding that circle. Since the "7" in this circle appears twice, the 7 must appear at least twice in the surrounding 4 squares.

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