Designer Profiles

Ishino Keiichiro Mechanical Puzzles

Puzzle Designers and Craftsmen

Ishino Keiichiro is a Japanese mathematician and puzzle designer who has produced a large number of popular puzzles such as the Burr in Cage, Nested Burr and Yachimata Cube.

Ishino Keiichiro owns the comprehensive polycube Puzzle Will Be Played website that catalogues designs and solutions of mainly polycube packing problems and interlocking burr puzzles from designers worldwide.

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.


You can find a number of Ishino Keiichiro’s puzzles at and Puzzle Will Be Played

Ishino Keiichiro Puzzles

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

Yachimata Cube Notchable 9 Moves 7 Holes Burr in Cage
Nested Burr Burr In Cage 22 Impossible Level 10
Unique Level 4.6 Sushi Puzzle*

*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, foremost and prolific mechanical puzzle designers and craftsmen.

If you are a craftsman or puzzle designer and would like to be added to the list, provide a small biography, display some new puzzle designs, news, or add new links or information for our readers please get in touch.

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)!


Checkout our latest blogposts for news and site updates.

Impossible Level 10 by Ishino Keiichiro © Baxterweb

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