Logic Masters Deutschland e.V.

Rules:

Normal Sudoku rules apply.

Modifiers: One cell in each row, column, and 3x3 box is a modifier cell. Each modifier cell must contain a different digit. Three of the modifier cells are row-modifiers, three are column-modifiers, and three are box-modifiers.

Values: A row-modifier cell has value equal to its row, a column-modifier cell has value equal to its column, and a box-modifier cell has value equal to its box (boxes are numbered 1-9 in normal reading order). Non-modifier cells have value equal to their digit.

German Whispers: Adjacent values along a green line must differ by at least 5.

Region Sum Lines: Box borders divide blue lines into segments whose values have the same sum. This sum may be different for each line.

Play on SudokuPad