- Draw a single closed loop along the grid lines that does not visit any grid
point more than once.
- A number in a cell indicates how many of the four grid lines surrounding
that cell are used by the loop.
- For a cell without a number the loop can use any number of
surrounding grid lines.
Additional Rules:
Cells with circles (sheep) are inside of the loop, cells with crosses
(wolves) are outside of the loop.
Regeln