Logic Masters Deutschland e.V.

Rules:

• Classic Sudoku: Every row, column and 3x3 box must contain every number from 1 to 9.
• Region Sum Lines: Box borders divide a blue line into multiple segments which have the same sum. Different lines may have different sums.
• Arrows: Numbers along an arrow sum up to the total in the circled cell.
• Kropki: Two digits separated by a white dot are consecutive; two digits separated by a black dot have a 1:2 ratio.
• V: Two digits separated by a V clue sum up to 5. If a clue is on the outer border, it applies to the digits at the two ends of that row/column.

Play it online in SudokuPad.