Expert Hashi
Expert Hashi puzzles are 13×13 and need a contradiction: try a bridge count, follow the islands a few steps, and when a rule breaks, that count was wrong.
Expert puzzles need at least one of these techniques, and may use any easier one:
- Contradiction
- Any other count here breaks a rule a few steps later.
How to play
Hashi, also known as Bridges, is a logic puzzle about islands. Each circle is an island with a number. Join islands with horizontal and vertical bridges so each island has exactly as many bridges as its number, with at most two bridges between any pair and no bridges crossing. In the end, every island must be connected.
Every Hashi here has exactly one solution and can be solved by logic alone. The grid grows from 7×7 at Easy to 13×13 at Expert, and the level is set by the hardest technique the puzzle needs.
- Bridges run straight, horizontally or vertically, between two islands.
- At most two bridges join the same pair of islands.
- Bridges never cross each other or an island.
- Each island has as many bridges as its number, and all islands end up connected.
Playing on this site
- Tap an island, then a neighbour it can see, to add a bridge; repeat to make it double, and once more to remove it.
- Tapping the water between two islands does the same.
- A finished island is shaded and its number fades; a number with too many bridges turns red.
- Hint points out bridges that are not in the solution first, then names the next technique and shows how many bridges go where.
- Your puzzle is saved in this browser, so you can come back to it later.