Fully proportional cube that allows only 180� turns.

• Inventor: Takafumi Haseda
• Mechanism: Constraints without bandaging
• Patents: Unknown
• Producer: Custom
• Year: 2007
• Original Price: $0.00 USD
• Current Price: No Data

This puzzle has been known in theory since at least 1981 when Morwen Thistlethwaite used the half-turn-cube for proving a new upper bound for God's number. Please search for "Thistlethwaite's algorithm" to find out more.
The half turn cube is a Rubik's Cube that allows only 180�-turns.
The first known physical sample was made by Takafumi Haseda no later than 2007 although no images were preserved.
The name "HANZOH" was given by Mr.Suse, a friend of Mr. Takafumi.
HAN means half by one character Kanji, and ZOH is used often as a name suffix for old persons.

The version shown here was redesigned and rebuilt in 2017 by Luke Chase. Unlike the version from Oskar van Denveter the pieces have a perfect cubic shape. As the predecessor was unknown to him he named his version "180 Cube - proportional half turn cube".
This puzzle's cores are placed at different distances from the center to restrict the turns to 180�. This later version is 3D printed and was presented in 2018.
Edge length: 57 mm
Weight: 92.6 grams

No one has contributed to this page yet!

This puzzle can be found in collections of these members:

---

Found a mistake or something missing? Edit it yourself or contact the moderator.