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Hashi Puzzles Collection

Choose from a wide variety of hashi “bridge” puzzles to print and solve!

hashi "bridges" logic puzzles.

What are Hashi Puzzles?

Hashi puzzles (short for Hashiwokakero) are a Japanese logic puzzle that goes by many other names including “Bridges” or “Chopsticks.”

A hashi puzzle consists of a square grid featuring “islands” which are made up of circles including a number. The goal of the puzzle is to correctly draw in the “bridges” between the islands as horizontal or vertical lines.

“Bridges” must be placed with the following restrictions:

  • The number on the island indicates the number of bridges connected to that island.
  • There can be no more than two bridges in the same direction.
  • The bridges may not cross one another.
  • The bridges must be placed in such a manner that all of the islands are connected to one another.

Here is a sample hashi puzzle to help you understand the rules.

SAMPLE HASHI PUZZLE

sample unsolved hashi logic puzzle.

SAMPLE HASHI SOLUTION

solution to sample hashi logic puzzle.

Grid Sizes

Hashi puzzles come in a variety of grid sizes. The difficulty level increases as the puzzle size increases.

Each grid size of hashi puzzles is available to download as either a free printable PDF or editable PowerPoint file.

6x6 hashi "bridges" logic puzzles pdf.
6×6 HASHI PUZZLES
7x7 hashi "bridges" logic puzzles pdf.
7×7 HASHI PUZZLES
8x8 hashi "bridges" logic puzzles pdf.
8×8 HASHI PUZZLES
9x9 hashi "bridges" logic puzzles pdf.
9×9 HASHI PUZZLES
10x10 hashi "bridges" logic puzzles pdf.
10×10 HASHI PUZZLES

Puzzle Solutions

ANsWer key link

Puzzle solutions are available on a password-protected solution page. I do not openly post the puzzle answer keys because one of my goals as a resource creator is to craft learning experiences for students that are non-google-able. I want teachers to be able to use these puzzles in their classrooms without the solutions being found easily on the Internet.

Please email me at sarah@mathequalslove.net for the password to the answer key database featuring all of my printable puzzles and math worksheets. I frequently have students emailing me for the answer key, so please specify in your email what school you teach at and what subjects you teach. If you do not provide these details, I will not be able to send you the password.

Not a teacher? Go ahead and send me an email as well. Just let me know what you are using the puzzles for. I am continually in awe of how many people are using these puzzles with scouting groups, with senior adults battling dementia, or as fun activities in their workplace. Just give me enough details so I know you are not a student looking for answers to the puzzle that was assigned as their homework!

Sarah Carter teaches high school math in her hometown of Coweta, Oklahoma. She currently teaches AP Precalculus, AP Calculus AB, and Statistics. She is passionate about sharing creative and hands-on teaching ideas with math teachers around the world through her blog, Math = Love.

8 Comments

  2. Thanks for sharing! I teach an elective Problem Solving Seminar for 7th graders. They love Ken Ken and I am going to try some of these with them over the next few weeks.

    1. That class sounds like it would be a blast to teach!

  3. The link to the website of lesson plans for logic puzzles doesn't seem to be working. 🙁

    1. It's working for me. Send me an e-mail, and I will send you the PDFs.

  4. I wonder if there is a version in which you can provide "moving islands," so that the students must place the numbered islands in a way to enable the building of bridges within the rules. (This problem is made a bit easier if any straight line bridges — no curves; yes diagonals — are allowed, rather than just horizontal and vertical bridges.)

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