Logic Masters Deutschland e.V.

Normal sudoku rules apply. Color each cell either blue or green. All cells of the same color must be orthogonally connected, and no 2x2 area may be all one color. A green cell's value is equal to its digit doubled (a green 5 has a value of 10). Each of the constraint types listed below form a unique region consisting of the digits 1-9. The unique region for the arrows refers to the bulbs of the arrows. The 'X' cages form one region and numbered cages form a different region. Digits along a purple line form a non-repeating set of consecutive values in any order. Values in a cage sum to the indicated value in the top left corner of each cage. The value 'X' is determined by the solver. Sum of all values along an arrow sum to the value in that arrow's circle. ▶ Play online in SudokuPad