Swiss scientists have trained a robot dog to assemble a Rubik's Cube weighing 4.6 kg.
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But counting the correct steps wasn't enough; they had to be executed. The robot had to place its foot precisely, exert the necessary force, and avoid moving any unnecessary elements. A mistake could disrupt the sequence and force it to correct its steps. The robot learned from its mistakes. During training, it experimented with different steps and gradually mastered those that led to the desired result.
In the end, the robot successfully assembled the cube in all three tests. Each attempt took eight to nine minutes and required approximately 30 separate steps.
The experiment is interesting not only because of the puzzle itself. For example, the robot will be able to rotate a valve, move an obstacle, or open a door without resorting to additional maneuvers. This will allow for the development of simpler and lighter machines for inspecting industrial facilities, performing technical maintenance, and conducting search and rescue operations.
Incidentally, nine-year-old Chinese boy Xua Jin recently set a world record for assembling the cube, needing only 2.51 seconds to do so.
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