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Hirokazu Iwasawa Mechanical Puzzles

Puzzle Designers and Craftsmen

Hirokazu Iwasawa (or more commonly Iwahiro), is a prolific and popular puzzle Japanese puzzle designer/craftsman who has produced some truly inspirational puzzles.

Designer Information

If you have information on this puzzle craftsman, or images to support this page please feel free to get in touch.

News of events:

To be confirmed.


His website site devoted to his incredible craftsmanship: Iwahiro Puzzles
A great many of Iwahiro’s puzzles can be purchased at Oy Sloyd Ab

Hirokazu Iwasawa Puzzles

Hirokazu-San has produced some great puzzles, of which many are below (Please feel free to update on missing puzzles).

All-Edges Coverage Ball Pyramid Puzzle Quartette Black Box
Caged Pyramid Mmmm 8-Identical-Piece Cube #1
All-Edges Coverage Chockablock CorRECTly In The Bag
Crystalline* Cubes in Space* Dango Box
Dinghy Hexahedroom ‘ODD’ puzzle
Square In The Bag Tangled Gym Jewel Box* Tritalon
Pentangular Jam Rectangular Jam Rightangular Jam
Triangular Jam Cube Wrapper*

*TheMetagrobologist most wanted. Do you have a copy to sell/trade? Email or PM us on our Facebook Page.


This page has been created to act as a constantly updated, serious portal and directory to many of the world’s most popular mechanical blogs. What are Mechanical Puzzles, read our guide. Want a solution? can provide mechanical puzzle, wood puzzle, cast puzzle solutions and support you with information, advice and guidance to a welcoming community.

If you have a blog and would like to be added to the list, provide a small biography and please get in touch. Want to write an article for the site? Get in touch.

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Interested in new mechanical wooden puzzles?

Visit Oy Sloyd Ab for a wide range of different puzzles (eg Rubik’s Cube, traditional puzzle games such as a pirate jacket and Hanayama Cast Metal Pencils)!


Check out our latest blog posts for site updates and our News area for the latest puzzle news.
Check out our guide to talented designers and craftsmen worldwide and serious collectors.
Check out our latest Interviews with talented designers and craftsmen worldwide.

Hexahedroom © Designer: Hirokazu Iwasawa (Baxterweb)

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