Logic Masters Deutschland e.V.

Merry Christmas! Fill each row, column, and 3x4 box with the numbers 1-12. White dots designate the difference between two cells (if without a number, the difference is 1). Black dots mark pairs of cells with a ratio of 1:2. Digits on thermometer lines must increase from the bulb end. Cages sum to the number in the upper left corner. The center digit on a 3-cell colored line is the sum of the two digits on the ends. The coloring in boxes 8 and 9 is for aesthetic only.

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