Hashiwokakero (橋をかけろ Hashi o kakero; lit. "build bridges!") is a type of logic puzzle published by Nikoli.[1] It has also been published in English under the name Bridges or Chopsticks (based on a mistranslation: the hashi of the title, 橋, means bridge; hashi written with another character, 箸, means chopsticks). It has also appeared in The Times under the name Hashi. In France, Denmark, the Netherlands, and Belgium it is published under the name Ai-Ki-Ai.

Rules Of the Game
There are no more than two bridges in the same direction.
Bridges can only be vertical or horizontal and are not allowed to cross islands or other bridges.
When completed, all bridges are interconnected enabling passage from any island to another.