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Title: Falls apart easily
Review: My son solved the 3x3x3 so I bought him the 4x4x4 and 5x5x5 versions for Christmas. I have had to reassemble the 4x4 and 5x5 numerous times within 1 week of him receiving them. He is very careful with them but still they fall apart easily. It is just a matter of time before I pitch both into the trash.
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