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Hashi puzzle books, also called Bridges

Join the numbered islands with bridges, until every island is connected.

What is hashi?

Hashi, also called Bridges or Hashiwokakero, is a puzzle of numbered islands. You join the islands with straight bridges so that each island has as many bridges as its number. Bridges run across or down, never cross another bridge, and there can be at most two between the same pair of islands. When you finish, every island is joined into one connected network.

How to solve it

  1. 1Start with the islands that have only one way to go, such as a 1 in a corner.
  2. 2Draw the bridges you are sure of, then cross off an island's number as it fills.
  3. 3Remember that bridges cannot cross, which rules out some routes.
  4. 4Check that every island is connected. The answers are at the back.

Levels

What Easy, Medium and Hard mean here

Easy, Medium and Hard, each explained at the start of the book.

  • Easy

    A gentle way in, with the first steps easy to see.

  • Medium

    More to work out before the next step shows itself.

  • Hard

    A real challenge, for people who like to think it through.

What is inside every book

  • 100 puzzles, one to a page
  • Easy, Medium and Hard
  • Answers at the back
  • Every puzzle has exactly one solution, checked by computer

Questions

When will the Hashi books be ready?
They are being made now. We add each book to this page as soon as it is finished.
Will there be answers?
Yes. Every book has the answers at the back, so you can check your work.