Bridges
Also known as Hashi, Hashiwokakero
Join the numbered islands with bridges so every count is met and the whole map connects.
What is Bridges?
Bridges, also called Hashi or Hashiwokakero, is a logic puzzle of numbered islands. Each number says exactly how many bridges end at that island. Bridges run straight along rows and columns, at most two between the same pair, and never cross.
The catch is the final rule: every island has to end up in one connected group. A map can have every number right and still be unfinished.
How to play Bridges
The aim: Join every island into one connected map, with each number exactly satisfied.
- The number is a count. An island marked 3 must finish with exactly three bridge ends touching it. Not two, not four.
- Tap two islands. Tap an island, then another one straight across from it, to lay a bridge. Tap the same pair again for a second bridge, and once more to remove both.
- Bridges run straight and never cross. A bridge only joins islands in the same row or column, and nothing may pass through another bridge or over an island in between.
- One map, not several. Every number can be correct while the islands sit in two separate groups. The puzzle is only finished when you can walk from any island to any other.
How scoring works
- Every island whose number is exactly satisfied pays, so a partly solved map still scores.
- Finishing the whole map pays a large completion bonus.
- Removing a bridge you no longer want costs nothing.
How a round ends
The round ends when every number is satisfied and the map is connected, or when you give up.
Skills it draws on
- Deduction
- Counting constraints
- Seeing what is connected
Play it in Calquest
Bridges is one of 15 games in Calquest, a free puzzle and logic app for Android. Each game has a ladder of levels that starts gentle and keeps climbing, daily quests and streaks give you a reason to come back, and you can play as a guest with no account.
Get Calquest on Google Play