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This is Quinsequential Gamma (3.5 cm) the third version of the Quinsequential design. Quinsequential Alpha required 9 separate moves before the first piece came free. Quinsequential Beta improved that to 11 moves, and now Quinsequential Gamma is ready for public viewing with a respectable 13 moves for first removal. As far as I know, this is a record for a 5x5x5 cube, so I am laying down the gauntlet! I have given the design a nickname of 'The Switch Cube' - you'll understand why when you've solved it! Available in four sizes to suit all budgets.