Hashi
Connect the islands with bridges to form a single network.
The rules
How to play
- 01
Match the number
Each island shows a number — it must end up with exactly that many bridges touching it, no more and no fewer.
- 02
Build bridges
Click between two islands, or select one island then a second, to add a bridge. Click a bridge again to cycle single → double → gone.
- 03
At most two
Build at most 2 bridges between any pair of islands. A double bridge counts as two toward both islands.
- 04
Straight lines only
Bridges run horizontally or vertically between islands — never diagonally.
- 05
No crossing
Bridges cannot cross other bridges or pass through an island in the way.
- 06
One network
When every island has its exact count, all of them must be joined into a single connected group.
Play smarter
Ways to read the network
High numbers
Islands with 7 or 8 have limited options — max 2 bridges per direction forces most of their connections.
Corner islands
A "4" in a corner has only two directions, so it must have 2 bridges in each of them.
Avoid isolation
Two adjacent "2"s can share at most 1 bridge — otherwise they would seal themselves off from the rest.
Edge islands
A "6" on an edge has three directions, so it must have 2 bridges in each of them.
Watch & learn
Two minutes to mastery
From the Intel desk
Reading for the curious
Hashi Puzzle: A Complete Beginner's Guide to Building Bridges
Learn how to solve Hashi puzzles (Bridges/Hashiwokakero) from scratch. Master the basic rules, follow our visual step-by-step tutorial, and discover essential strategies for beginners.
Hashi Strategies: Bridge Patterns Every Island Master Must Know
Master Hashi with the 8-rule, isolation prevention, and forced bridge techniques. Learn the patterns that solve complex grids without guessing.
Keep going
Where to next
Fresh every day
The Daily Hashi
One shared island network for everyone, every day. Build a streak and compare your solving time.
Go deeper
Rules & strategy guide
From corner logic to isolation traps — the complete written guide with island colour cues.
Beyond the bridges
Explore all puzzles
Sudoku, Nonograms, Slitherlink and fifteen more logic games await.