Bridges (Logic puzzle)

"Bridges" is one of pencil puzzle game. The goal is to connect all of the islands into a single connected group by drawing a series of bridges between the islands. The bridges must follow certain criteria. ・They must begin and end at distinct islands, travelling a straight line in between. ・They must not cross any other bridges or islands. ・They may only run orthogonally. ・At most two bridges connect a pair of islands ・The number of bridges connected to each island must match the number on that island.