Logic Masters Deutschland e.V.

Normal Sudoku Rules apply. Every row, column and marked region in the puzzle must contain the digits 1-9 exactly once.

Additional Rules:

Global Entropy: Divide the digits 1-9 into low(123), middle(456), and high(789) digits. Every 2x2 cell group in the puzzle must contain at least one digit of each group.

X-Sums: Digits on the outside of a row or column indicate the sum of the first n digits, n being the first digit in that row or column."

F-Puzzles

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