🌉 Bridges (Hashi)
🧩 Logic · 0 playsBridges (Hashi)
Join the numbered islands with straight bridges until every count is satisfied.
About Bridges (Hashi)
Circled numbers sit on a grid like islands in a strait, and each must be joined to its neighbours by exactly as many bridges as its number states. Bridges run only horizontally or vertically, may not cross one another or pass through an island, and at most two may join the same pair. One further condition gives the puzzle its depth: when every count is satisfied, the whole network must hang together, so that any island can be reached from any other. Counting the possible connections around a heavily numbered island is where every solve begins.
How to Play
Tap between two islands to lay a bridge; tap again for a second bridge, and a third tap clears both. Each island must carry exactly the number of bridge ends its digit shows, and bridges may not cross. The finished network must connect every island into one group.
💡 Tips & Strategy
Start with the islands whose bridges are fully forced. An 8 in the open takes two bridges in all four directions; a 4 in a corner and a 6 on an edge are equally saturated. Slightly weaker but just as useful: a 3 in a corner or a 5 on an edge must place at least one bridge in every available direction, and one guaranteed bridge is often all the neighbouring island needed.
Count capacity, not hope. An island's number cannot exceed twice its count of usable neighbours, so whenever a neighbour is disqualified — blocked by a crossing bridge, or already full — recount. A 4 that drops to two usable neighbours instantly becomes a double bridge each way.
Watch the 1s and 2s, because they carry a special rule: two 1s may not be joined to each other in isolation, and two 2s may not take a double bridge between them, whenever doing so would seal a group off from the rest of the puzzle. Connectivity is a genuine constraint, not an afterthought — a legal-looking bridge that would complete a closed cluster short of the whole board is wrong.
Remember that bridges block. Every bridge you lay is also a wall across the channel it occupies, and cutting a distant pair of islands off from each other is frequently the point of a placement. When stuck, look for the island whose remaining options all pass through one channel — then look at what laying or refusing that bridge does elsewhere.