Logic Masters Deutschland e.V.

• Normal sudoku rules apply. Digits may not repeat on the marked negative diagonal.
• Shade some cells so that all shaded cells form one orthogonally connected region and all unshaded cells form another. No 2x2 area may be entirely shaded or entirely unshaded. A black circle marks a shaded cell; a white circle marks an unshaded cell.
• Mirror: a shaded cell's digit also appears in the cell reflected across the negative diagonal (e.g. if R1C3 is shaded and contains 2, R3C1 contains 2).
• Vampires: a shaded cell whose reflected cell holds a different digit is a vampire (it casts no reflection). No two vampires share a row, column or box, and all vampires hold different digits.
• Digits along a light grey thermometer strictly increase from the bulb.
• Dark grey lines are palindromes: they read the same in both directions.
• Digits separated by a white dot are consecutive. Not all such pairs are marked.

Play on SudokuPad