Logic Masters Deutschland e.V.

Normal sudoku rules apply. The grey shape indicates an extra region with the numbers 1-9. The grey lines are palindrome lines. Digits on the line read the same from either end. Digits on an arrow sum to the attached circle. (Digits may repeat on arrows if allowed by other rules.). Digits connected by a large white dot contain a set of 4 consecutive digits. All large white dots are given. Digits separated by the small white dot are also consecutive. Not all possible small white dots are given. The cell containing a gray circle must contain an odd digit.

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