Bridges

emoji_eventsGoal

Connect every island into one network with bridges, so each island has exactly as many bridge ends as its number. Every puzzle has a single solution — you never have to guess.

gavelRules

• Bridges run straight, horizontally or vertically, between two islands
• At most two bridges join any pair of islands
• Bridges may not cross each other or pass over an island
• Each island's number is the exact total of bridge ends that touch it
• When finished, every island must be reachable from every other

sports_esportsHow to Play

• Tap the water between two islands to lay a bridge there; tap again for a second bridge, once more to clear
• Or drag from an island toward a neighbour — the bridge you are about to lay is shown as you pull, and letting go lays it
• Or tap an island to select it: dashed lines show every island it can reach (red where another bridge is in the way), then tap one of them
• An island turns green when its number is met, red if you have given it too many
• Use Hint to place one correct bridge, and Undo to step back
• Keyboard: arrows or WASD walk the cursor island to island, Enter lays a bridge along the step you just took, Z undoes

lightbulbTips

• Start with the tightest islands: a corner marked 3 or an edge marked 5 can only be satisfied one way
• An island whose number equals all its possible bridge ends must use every one — draw those first
• Watch for islands that would be cut off, and keep the whole network joined as you go

speedDifficulty

The board grows with difficulty: 7×7, 9×9 and 11×11, with more islands each step. A bigger board means longer chains of deduction, never guesswork.