Logic Masters Deutschland e.V.

Sudoku: Normal Sudoku rules apply; place the digits 1-9 once in every row, column, and 3x3 box.

Region Sum Line (starting cell r2c3): Digits along a blue line are divided by box borders into sums of equal value.

Sequence Lines (starting cells r1c1, r1c8, r8c6, r9c2): Digits along a gray-blue line have the same difference.

Dutch Whisper Lines (starting cell r4c5): Digits along an orange line differ by at least 4.

Renban (starting cell r5c2): Digits along a magenta line contain a set of consecutive digits in any order, without repeats.

Thermometer Line (bulb cell at r7c6): Digits along a gray thermometer strictly increase from the bulb.

White Kropki Dots: Digits separated by a white dot are consecutive.

Odd/Even: Digits in a gray square are even; digits in a gray circle are odd.

Expected Difficulty: 1.5 stars

This was set in response to Scojo's Setting Saturday Prompt: "A Secret Surprise When You Flip It Upside Down."

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