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Moving: Hole
Ideal Puzzle PenA strange puzzle from the cube craze which resembles a mixture between the ten billion barrel and Atomic Chaos.
Ingenious BallThis version was made in Taiwan.
Inside Out 2x2x2 Start (aka Vadasz Kocka)The solid colour, 2x2x2 version of the Vadasz cube.

Inside Out 3x3x3 Standard (aka Vadasz Kocka)The solid colour, 3x3x3 version of the Vadasz cube.
Inside Out 4x4x4 Profi (aka Vadasz Kocka)The solid colour, 4x4x4 version of the Vadasz cube.
Inside Out 4x4x4 Rainbow (aka Vadasz Kocka)The rainbow coloured 4x4x4 version of the Vadasz cube.

InversionA sliding blocks puzzle with only edges and corners.
IQ Magic CardA Moving Hole puzzle with 14 rows and 8 columns.
IQubeA well-designed 3D movable space puzzle.

ITC - Puzzle PenA 6x6 puzzle pen. Marketed by Ideal in 1982.
Ivory Tower (aka: Tower of Babylon)One of the more successful puzzles from the original cube craze.
Japanese Varikon 2x2x2A rare variant of Varikon 2x2x2 of japanese origin.

Java Tea CanAnother can with skewed cuts advertisting some sort of beverage.
Joan Miro Sliding puzzleA very big sliding piece puzzle which depicts one piece of modern art.
JupiterA bigger version of Saturn with three rings that can be twisted on its own.

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