Erno Rubik, the inventor of the Rubik's Cube, poses for The Associated Press at Liberty Science Center, Wednesday, April 25, 2012, in Jersey City, N.J. The center is hosting an exhibit on Rubik's Cubes which will include a cube made with diamonds that is worth 2.5 million dollars. (AP Photo/Julio Cortez)

Associated Press
Erno Rubik, the inventor of the Rubik's Cube, poses for The Associated Press at Liberty Science Center, Wednesday, April 25, 2012, in Jersey City, N.J. The center is hosting an exhibit on Rubik's Cubes which will include a cube made with diamonds that is worth 2.5 million dollars. (AP Photo/Julio Cortez)
Erno Rubik, the inventor of the Rubik's Cube, poses for The Associated Press at Liberty Science Center, Wednesday, April 25, 2012, in Jersey City, N.J. The center is hosting an exhibit on Rubik's Cubes which will include a cube made with diamonds that is worth 2.5 million dollars. (AP Photo/Julio Cortez)
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