How to solve Hashi
Connect the islands with bridges
LinkedIn のデイリーゲームで人気になったパズル Hashi を、もう一局遊びたくなったことは？ ここなら無制限。無料の盤面がその場で生成され、3段階の難易度と一意の解が保証されています。
遊び方： Hashi
- Join the numbered islands with horizontal and vertical bridges.
- An island's number is how many bridge ends must touch it.
- At most two bridges may link the same pair, and bridges can never cross.
- Drag from one island to another to draw a bridge; drag again for a double bridge. Tap a bridge to remove it. Every island must end up connected into one network.
How to solve Hashi: techniques that work
Count neighbours before anything else. An island's number is spread across at most two bridges per neighbour, so an island showing 2k with exactly k neighbours must run a double bridge to every one of them: a corner 4 with two neighbours is fully forced, as is an edge 6 with three. These "saturated" islands are free moves — play them all first.
One step weaker but just as useful: an island whose number is 2k−1 with k neighbours must connect at least once to every neighbour. That single guaranteed bridge is often enough to block a crossing elsewhere and cascade into the next deduction.
Keep the network connected. All islands must end up in one web, so a bridge that would seal off a finished sub-network — say, a 1—1 pair on the edge linking only to each other — is illegal even if the numbers allow it. Late in a board, connectivity is usually the argument that decides the last few bridges.
Common mistakes
Forgetting that bridges block each other: a bridge is a wall for every perpendicular route. Players plan two bridges that cross and only notice when the second refuses to draw.
Overloading a pair. However large the numbers, two islands can share at most two bridges — an 8 next to an 8 still exchanges only a double bridge and needs other neighbours for the rest.
From easy to hard
More islands mean longer chains between forced moves. On hard boards alternate systematically: saturate the full islands, then run the connectivity check, then look for almost-saturated ones. Hashi (Hashiwokakero, "build bridges") rarely needs more than these three ideas.
FAQ
- LinkMyPzzl の Hashi は無料・無制限ですか？
- はい。Hashi の盤面はブラウザ内でその場で生成されます。アカウント不要・無料で、好きなだけプレイできます。
- 毎日の Hashi パズルと何が違いますか？
- LinkedIn で人気になったデイリー版は1日1問だけ。LinkMyPzzl は盤面を無制限に生成し、難易度も選べます。
- Hashi の盤面には必ず一意の解がありますか？
- はい。ソルバーが生成された全盤面を検証します。解は常にただ1つです。
- Can bridges cross each other?
- Never. Bridges run straight horizontally or vertically and act as walls for perpendicular bridges — planning around crossings is the heart of the puzzle.
- How do I delete a bridge I've drawn?
- Just tap or click the bridge itself and it disappears. Drawing works by dragging from one island to an aligned neighbour; a second drag makes the bridge double.