Free Bridges Maker
Free Bridges Puzzle Generator
Hashiwokakero — connect the islands, cross nothing
Updated Sep 17, 2026
Bridges, known in Japanese puzzle magazines as hashiwokakero and often shortened to hashi, gives you numbered islands and asks you to join them with horizontal and vertical bridges. Each island takes exactly as many bridge ends as its number, at most two bridges run between any pair, bridges never cross, and when you are done every island must be reachable from every other. That last rule, connectivity, is what separates it from ordinary counting puzzles and makes the endgame interesting. Sizes are 7×7, 9×9 and 11×11, each with a printable PDF and answer key.
Why use Puzzone
Counting Plus Connectivity
Two very different kinds of reasoning in one puzzle: local bridge counts, then a global check that nothing is stranded.
Three Sizes
7×7 to learn it, 9×9 as the standard, 11×11 for a long solve.
One Valid Network
Every puzzle is generated from a connected layout and verified, so exactly one bridge network satisfies it.
Clean in Print
Single and double bridges stay distinguishable in black and white, with the solution on its own page.
How it works
Choose a Size
Pick 7×7, 9×9 or 11×11.
Generate
Click Generate for a new island layout with one valid network.
Print or Export
Download the PDF with the puzzle and its answer key.
Frequently asked questions
Connect islands with horizontal or vertical bridges so each island has exactly the number of bridge ends shown. No more than two bridges join the same pair, bridges may not cross each other or pass through islands, and the finished network must connect every island.