Bridges

Bridges (also called Hashiwokakero, Hasi, Ai-Ki-Ai or Chopsticks) is a logic puzzle with the goal of connecting all the islands by drawing bridges between them. There are several rules that must be obeyed.

• 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 (i.e. they may not run diagonally).
• At most two bridges connect a pair of islands.
• The number of bridges connected to each island must match the number on that island.
• The bridges must connect the islands into a single connected group.