Logic Masters Deutschland e.V.

Normal Sudoku rules apply.

SLINGSHOT: If a cell contains an arrow, the digit in the cell(s) that the arrow comes from must appear in the grid N steps away, in the direction of the arrow. N is the digit in the arrow cell.

SKYSCRAPER: Slingshot arrows can point to cells immediately outside of the grid, as well as cells inside of the grid. Cells outside of the grid contain skyscraper clues. Imagine the digits in the grid as skyscrapers with heights corresponding to their values. Numbers outside the grid show how many digits that can be seen in the corresponding row/column. Taller buildings hide shorter buildings.

Answer check: do not include the digits outside the grid.

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