I found this puzzle in my dad's bathroom. The book is "Things To Do While You Poo On The Loo". I think the puzzle is malformed. Here is a Penpa link to an online solver. Is there actually an answer to this puzzle?
This is a single player game. Each puzzle is based on a rectangular arrangement of islands where the number in each island denotes how many bridges are connected to it. The object is to connect all islands according to the number of bridges while obeying these rules:
- No more than two bridges can connect any two islands.
- Bridges can only be vertical or horizontal (not diagonal)
- Bridges cannot cross islands or other bridges.
- When completed, all bridges should be interconnected enabling passage from island to island.