Logic Masters Deutschland e.V.

Normal Sudoku rules apply. Digits in a cage must sum to the number in its top left corner.

The grid is a raisin cake that 4 friends wanted to share, so they cut it in 4 pieces. Each cell represents the number of raisins in that part of the cake and the red lines represent the knife cuts. They wanted to be fair and they cut the cake so that everyone had the exact same amount of raisins. The raisins contained in a cell cut by the knife were always equally distributed between the two neighboring pieces. The raisin in the center of the cake was cut in 4 equal pieces and was the only raisin touched by the knife!

After getting their piece, two of the four friends decided they wanted some garnish. One of them added some extra raisins (black dots) between digits of the original cake with a ratio 2:1 and one added some powdered sugar (white dots) between consecutive digits. They didn't necessarily put all the garnish they could!

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