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Hashi
Connect a scattering of numbered islands with horizontal and vertical bridges. Each island's number tells you exactly how many bridges should meet it, and the whole network has to end up connected.
Rules
- Connect islands with horizontal or vertical bridges.
- Each island's number is the total bridges it ends up with.
- No more than two bridges between the same pair of islands.
- Bridges may not cross each other.
- Every island has to belong to one big connected network.
Controls
- Drag from one island to another in a straight line to draw a bridge between them.
- Click an existing bridge to cycle it: one bridge becomes two, two becomes none.
- Right-click a bridge to clear it immediately.
- On mobile, drag your finger between two islands to draw a bridge, or tap an existing bridge to cycle it.
Tips & Tricks
- When an island's number forces every direction to use two bridges (think a "4" in a corner with two neighbours), draw those doubles straight away.
- A "1" only links to one neighbour, so if only one direction reaches another island, it must have a bridge.
- Never finish a "2" with both bridges to a single neighbour if that would cut it off from every other island.