Logic Masters Deutschland e.V.

Rules:

• Sudoku: Place the digits 1-9 once each in every row, column, and 3x3 box.
• Viking Voyage: Shade some cells (the Islands) such that the unshaded cells (the Sea) form an orthogonally connected area (with no loops) where no 2x2 group of cells is either fully shaded or unshaded. Different parts of the Sea may touch diagonally (checkerboard patterns ARE allowed). Note that Islands do not need to connect to the edge of the grid.
• The given digit is Sea.
• Remote Sums: A digit X in a cage points to a second digit Y located X cells away vertically or horizontally. The number in the top left corner of the cage, if given, indicates the sum of X+Y.
• Both the digit X and the digit Y are Sea.
• The digit X also counts how many Sea cells (including itself) can be seen orthogonally from that position (Islands obstruct the view).
• Genetics: Each digit has two properties. The first property is being shaded or unshaded according to the Viking Voyage rules. The second property is being prime (1,2,3,5,7) or composite (4,6,8,9). (1 is grouped in with the prime digits, though it technically isn't prime.)
• Each cell that is directly connected to two cells in the row above it by an ivory line is considered a child of those two cells (the parents).
• Each child can be formed by taking a property of one parent and taking the other property of the other parent.
• For example: If a child has parents that are a shaded 8 (composite) and an unshaded 5 (prime), the child could either be a shaded prime digit, or it could be an unshaded composite digit. If a child has parents that are an unshaded 8 (composite) and an unshaded 7 (prime), the child will be unshaded either way, and could be any digit (prime or composite).

Streamers have permission to use this puzzle.