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本书是专门为小学生量身打造的数独训练书，分别介绍了四宫、六宫、九宫标准数独，同时还介绍了5种常见的变形数独及技巧，并辅以相应题库，旨在使未接触过数独的小学生能够快速熟悉数独，并通过本书对变形数独的介绍，扩展对数独的认知，拓展逻辑思维，提高学习能力。
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