A 3x3x3 which implements another concept of contraining the movements.
The effect is similar to the constrained cube but the restrictions are variable.

• Inventor: Choong Myoung Lee
• Mechanism: Constraints without bandaging
• Patents: Unknown
• Producer: Custom
• Year: 2012
• Original Price: $0.00 USD
• Current Price: No Data

When you turn the cube, the center piece do not move. This makes a "limitation" to the turns and gave the puzzle its name. Sometimes you can only turn 90' clockwise, sometimes freely, sometimes never. Image 5 shows a state where U' and U2 are possible but U is blocked.
Center piece, center cap and core are combined to one since the center piece never actually turns.
The design does not need screws.
There are 6 identical centers and 12 identical edges. Each edge has one half which allows all turns and one which does not.

Thank you to the following people for their assistance in helping collect the information on this page: ChoongMyoung Lee.

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