Connect every island. Match each number. Use one or two bridges per route, with no crossings.
Tap between islands — cycle 0, 1, 2 bridges.
Or select an island, then tap + or a bridge.
Hold or right-click a bridge to lock it. Repeat to unlock.
The inner ring fills toward each bridge. Blue means complete.
More controls
Drag between islands or tap both endpoints to join them. At a crossing or in a tight gap, use the endpoints. A dashed ring marks a problem; separate networks are incomplete.
Hint previews a move. Tap it again to apply.
Arrows move. Shift + Arrow cycles a bridge; Enter or Space selects an island. L locks a focused route; Z undoes; Escape deselects. Escape cancels a gesture.
For a larger board, choose Enlarge, then Pan in Settings.