Logic Masters Deutschland e.V.

We're back drawing whisper loops on the grid... but this time, appropriately enough for a whisper, you have to be sneaky about it! Don't let yourself be seen!

Solve in SudokuPad

Sudoku: Normal Sudoku rules apply.

Creeping Around: Draw a one-cell-wide loop through the grid which moves orthogonally and does not touch itself, not even diagonally, and which visits every row, column and box at least once. Any two cells adjacent to each other on the loop must differ by at least 5. The loop may not enter any cell seen and/or occupied by any Security Camera, Policeman or Traffic Officer, as per the rules below.

Security Cameras: These are numbered clues outside the grid. They occupy no cells, and see cells according to skyscraper rules - they see all cells in their row or column for which there is no larger cell in between the seen cell and the clue.

Policemen: These are arrows inside the grid. They occupy the cell with the arrow(s), and additionally see D further cells in the direction of each arrow, where D is the digit in the policeman's cell, regardless of the digit the seen cell contains.

Traffic Officers: These are found around circles inside the grid. They occupy the smallest of the four cells surrounding the circle, and see no other cells. Furthermore, the circle is a roundabout; the digits strictly increase from the traffic officer's position going either clockwise or anticlockwise around the circle; you must determine in which direction for each roundabout.