Causeway: Hashi Bridges

Hashiwokakero, hashi for short, is a puzzle of islands and bridges. Each island carries a number, and that number is exactly how many bridges must touch it.

Bridges run straight across or straight down, between two neighbouring islands. Two islands can share one bridge or two, never more. Bridges never cross each other and never pass over an island. The board is solved when every number is met and every island is joined into one connected group.

Drag from one island toward its neighbour to lay a bridge. Do it again for a double, and once more to clear it. Islands turn green when their count is met, and red if you have given them too many.

Every board has exactly one answer, proved by a solver before it is played, so nothing is ever a guess. Boards grow from four islands on a small grid to twenty-five islands on a ten by ten.

FEATURES
• Hashi boards from four islands up to a ten by ten, each with one unique solution
• Undo, and a hint that lays one correct bridge
• A new daily board
• No timer, no pressure
• Works offline

Recent changes:
Fixes a bug that could take you out of a level after an ad. Smoother play.