File list (Check if you may need any files):
SudokuSolver
............\SudokuSolver.sln
............\SudokuSolverCSharp
............\..................\bin
............\..................\...\Debug
............\..................\obj
............\..................\...\Debug
............\..................\Properties
............\..................\..........\AssemblyInfo.cs
............\..................\SudokuSolver.cs
............\..................\SudokuSolverCSharp.csproj
............\SudokuWin
............\.........\bin
............\.........\...\Debug
............\.........\Data
............\.........\....\1.xml
............\.........\....\10.xml
............\.........\....\11.xml
............\.........\....\12.xml
............\.........\....\13.xml
............\.........\....\14.xml
............\.........\....\15.xml
............\.........\....\16.xml
............\.........\....\17.xml
............\.........\....\18.xml
............\.........\....\19.xml
............\.........\....\2.xml
............\.........\....\20.xml
............\.........\....\21.xml
............\.........\....\3.xml
............\.........\....\4.xml
............\.........\....\5.xml
............\.........\....\6.xml
............\.........\....\7.xml
............\.........\....\8.xml
............\.........\....\9.xml
............\.........\MainForm.cs
............\.........\MainForm.Designer.cs
............\.........\MainForm.resx
............\.........\obj
............\.........\...\Debug
............\.........\Program.cs
............\.........\Properties
............\.........\..........\AssemblyInfo.cs
............\.........\..........\Resources.Designer.cs
............\.........\..........\Resources.resx
............\.........\..........\Settings.Designer.cs
............\.........\..........\Settings.settings
............\.........\SudokuWin.csproj