Logic Masters Deutschland e.V.

RULES:

• Normal Sudoku rules apply.
• Draw a one-cell-wide loop of orthogonally connected cells, which does not branch or touch itself orthogonally.
• The loop may touch itself diagonally.
• Adjacent digits along the loop must differ by at least 5.
• A circled number indicates the sum of the digits which are on the loop within its four surrounding cells.

LINK:

Play on SudokuPad

Hope you enjoy.