Hashiwokakero FAQ

Read how to play Hashiwokakero for the complete rules, then use the solving techniques to keep larger networks connected.

What is Hashiwokakero?

Hashiwokakero, also called Hashi or Bridges, is a logic puzzle where numbered islands are connected by straight bridges so their totals are exact and every island belongs to one network.

What does an island's number mean?

It is the exact number of bridge lines touching that island. A single bridge counts as one and a double bridge counts as two.

How many bridges can connect two islands?

At most two. They must run horizontally or vertically between visible islands in the same row or column.

Can bridges cross?

No. Bridges cannot cross another bridge, turn a corner, or pass through an island.

Can I connect past a nearer island?

No. A bridge may connect only to the first visible island in its direction because it cannot pass through the nearer one.

Is matching every number enough to solve the puzzle?

No. All islands must also form one connected network. Separate groups are invalid even when every individual number is satisfied.

How do I place a double bridge?

Select the same pair of islands a second time. A third selection removes the pair, cycling through one, two, and zero bridges.

Is Daily Bridges the same for everyone?

Yes. Everyone receives the puzzle selected for the same UTC date.

Where is my Riverworks progress saved?

Campaign progress, unfinished bridge networks, and daily results are stored locally in this browser and do not automatically sync between devices.