Assembly PuzzlesDesigner Profiles

Hajime Katsumoto Mechanical Puzzles

Puzzle Designers and Craftsmen

Hajime Katsumoto

Hajime Katsumoto is an incredible puzzle designer from Japan. A real favourite of ours at TheMetagrobologist. He was awarded a Puzzlers’ Award and Honorable Mention for the simply brilliant ‘Slide Packing’ and ‘Penta in a Box’.

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:



Many of Hajime-san’s puzzles can be purchased at PUZZLE of MINE * WEB-SHOP.

Hajime Katsumoto Puzzles

A guide to the puzzles of Hajime-san. (Please feel free to update on missing puzzles).

Twins of Triplets* Linked-L Cube* Big Conflict, Small Conflict*
Slide Packing Penta in a Box Slide in*
The Symmetries* Eccentric Pentominoes* Pin Block Case*

*TheMetagrobologist most wanted. Do you have a copy of Pin Block Case, Linked-L Cube or Eccentric Pentominoes 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.

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Penta in a Box by Hajime Katsumoto © Nick Baxter (Baxterweb)

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