Why Bridges (Hashi)?

Hashiwokakero, commonly known as "Bridges" or "Hashi," is a classic Japanese logic puzzle. The goal is to connect islands (numbers) with bridges (lines) so that every island has the correct number of bridges connected to it. It's a clean, visual logic puzzle that appeals to Sudoku fans looking for variety.

Pro Tip: These puzzles scale beautifully. You can create "Giant Hashi" books with full-page puzzles that are highly sought after by advanced solvers.

Step-by-Step: Creating Your Bridges Book

Choose Difficulty level

Define the challenge from from easy to hard.

Easy: Great for beginners and quick solves.
Hard: Perfect for "Extreme" puzzle books.

Select the pages where to add puzzles

Bridges puzzles require clear white space between islands so players can draw lines without clutter. We recommend 1 puzzle per page for grids larger than 15x15.

Select the pages where to place the solutions

BooksGenie automatically calculates the single valid solution. These are placed at the back of the book, showing the completed bridge network.

Customize the pages and puzzles

Style your islands. Standard Hashi uses circles with numbers inside, but you can choose to customize all aspect if how they look for modern design. Ensure line thickness is heavy enough to print clearly.

Generate and download

Click "Generate." The AI ensures that every puzzle has a unique solution and that all islands are connected in a single continuous group (no isolated clusters).