Logic Masters Deutschland e.V.

Normal Sudoku rules apply.

Values in cages sum to the given total. Digits do not repeat in cages, but values may.

Draw a 1 cell wide orthogonally connected loop of cells in the grid. The loop does not branch or touch itself, not even diagonally. The loop visits exactly 1 cell in each cage. Any group of three consecutive cells along the loop must contain one each from the sets [147], [258], and [369].

For killer cages, the value of a cell on the loop is any number 1-9 that is the same modular set as the digit in the cell. (i.e. a 4 on the loop has a value of 1, 4, or 7; an 8 on the loop has a value of 2, 5, or 8; etc.)

Example:

SudokuPad