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我认为解决小学数独九宫格的解题方法和技巧:
1. 联除法:在三个并排的九宫格中,找到两排相同的数字,然后利用九宫格的规则确定另一排中该数字的位置。
2. 巡格法:找出每个九宫格中频率高的数字,推断出该数字在其他九宫格中的位置。
3. 排它法:观察行列或九宫格中不能填入其他数字的位置,填写剩下的数字。
4. 待定法:暂时确定某个数字在某个区域,再利用其进行排除。
5. 假设法:随机填入一个数字,进行推演,若产生矛盾则否定该假设。
6. 行列法:从行列入手,提高解题效率。
7. 频率法:统计某一行列或九宫格中所有情况,选择某位置中出现频率高的数字。