#### Topic: Question on a cube of Rubika

How many the minimum of edges of a cube needs to be seen unambiguously to recover a configuration of all cube? Disassembled, certainly.

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How many the minimum of edges of a cube needs to be seen unambiguously to recover a configuration of all cube? Disassembled, certainly.

Hello, Amygdala, you wrote: A> How many the minimum of edges of a cube needs to be seen unambiguously to recover a configuration of all cube? Disassembled, certainly. The estimation "on the average" or "in the worst" a case is necessary? We can select what edge to look following on the base earlier led observations, or we can request once photos of edges under the list, and are then obliged to answer? At worst, obviously, the answer 6: we Consider almost assembled cube in which on a place all cubes, except 4 cubes on the middle of edges of a red edge, and they are allocated so that the red side of these cubes is turned "not on a red edge". Obviously, without having a photo of a red edge we cannot judge the true layout of these of 4 cubes, even having photos of all remaining. The same situation can be added on any edge.

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