Monday Mutant 47: Fencing Match (all 3's)

In this Fencing Match puzzle, a 3 has been placed in every cell which could legally contain one. The number of edges of an empty cell which are part of the loop must not be 3. The rules are otherwise unchanged.

With apologies to MellowMelon (AKA Palmer Mebane).

In unrelated news, Sudoku Xtra issue 11 is out! It contains five of my puzzles, including 3 Battleships puzzles and a mutant Seek and Spell! It also contains two enjoyable Heyawake puzzles created by Gareth Moore himself, so even if you absolutely hate my puzzles, maybe you'll still enjoy something in there.