数独是当前流行的一种填字游戏。本文介绍了几种常用的数独求解方法，并通过具体实例，探讨了数独问题 的求解方案，最后使用C#语言编程实现。结果证明，该方案运行效率高，结果易于理解。

Sudoku is a kind of popular crossword puzzle. This paper introduces several commonly used methods of solving Sudoku problem. The solution of Sudoku problem is discussed through concrete examples. Finally, it is realized by C# language. The result shows that the scheme is running with high efficiency, and is easy to understand.