Logic Masters Deutschland e.V.

Normal sudoku rules apply: each digit, 1-9, appears exactly once in each row, column, and 3x3 box.

In cages, digits cannot repeat, and the number in the top left corner is either the sum OR the product of all the digits in the cage. For example, a 3 cell 18 cage could contain 4/6/8 (sum) or 1/2/9 (product). It is up to the solver to deduce which cages are sums and which are products.

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