Linesweeper
Background
Janko.at attributes this puzzle to Jak Marshall.
Puzzle and Goal
An unsolved puzzle consists of a rectangular grid containing some number clues.
The goal is to create a single closed loop to satisfy the clues.
Rules
The solved grid must satisfy the following conditions:
The loop does not ever visit a cell with a clue.
Clues indicate the number of neighbors containing a loop segment.
Playable Online