Build Bridges Puzzle

Build Bridges is an addictive and challenging logic puzzle known as Hashiwokakero.
The goal of Build Bridges is to connect islands by briges.

★★★ Features ★★★
✔ Unlimited number of puzzles for free
✔ 4 levels of difficulty - small, medium, large and extra large
✔ Undo/Redo
✔ Autosave
✔ Useful highlighting

★★★ Rules ★★★
The goal is to connect all of the islands (circles) by drawing a series of bridges between the islands.
The bridges must follow certain criteria:
1) They must begin and end at distinct islands, travelling a straight line in between.
2) They must not cross any other bridges or islands.
3) They may only run perpendicularly.
4) At most two bridges connect a pair of islands.
5) The number of bridges connected to each island must match the number on that island.
6) The bridges must connect the islands into a single connected group.