In a conventional shuffle system, information about the shuffle is taken out, leaked to the outside, etc. due to illegal access to the CPU, etc., and information about the arrangement of shuffled cards is illegally acquired from there, and there is room for cheating. There was a problem. The shuffle system of the present invention includes a plurality of shuffle devices connected in series with each other, a plurality of independent CPUs, each connected with the plurality of shuffle devices, and each of the CPUs spans a plurality of shuffle devices. By shuffling the cards, the arrangement of the cards is randomized, and even if information about the shuffling in each shuffle device is pulled out by illegal access to the plurality of CPUs or the like, which card shuffle is assigned to? By making it difficult to specify across all shuffle devices, a system is provided that reduces the risk that the arrangement of shuffled cards will be identified.
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