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本书数独的学习是一个循序渐进的过程，难度由小到大，模型由易到难。从菜鸟级到骨灰级的数独磨练，以及标准数独基础上的各种变形模式，都会让你经历一番从适应到挑战的过程。变形篇中更有游戏规则的介绍和游戏技巧的提示，让你的解题思路能够更清晰明了。
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