![C35D6677-DF0B-4E5C-AE79-45A85EA2D964.png](https://cdn.steemitimages.com/DQmRZLuCepoGp9VESDDEW68kJMvkT2yDM6PDi9ATjobGe5Y/C35D6677-DF0B-4E5C-AE79-45A85EA2D964.png)

这两天沉迷上玩数独，以前从来没玩过，因为看到密密麻麻的数字就觉得很困难。主要是朋友分享了个微信小游戏过来就打开玩玩，一开始不知如何下手，就乱填，然后填到后面发现屡屡出错，后来总结经验慢慢找到规律和方法，先把每个格子候选的数字都列出来，然后逐个排除和推导，还挺有趣的。

可是这初级的第二关怎么这么难，都没几个填好的数字，搞了差不多四个小时才搞出来，太难了。然后玩了第三关，一眼看过去就比第二关简单太多，不到一个小时搞定，不知道这关卡设计是不是为了骗广告费的。

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