File list (Check if you may need any files):
Sudoku
......\bin
......\...\Debug
......\...\.....\Sudoku.exe
......\...\.....\Sudoku.pdb
......\...\.....\Sudoku.vshost.exe
......\...\.....\Sudoku.vshost.exe.manifest
......\Form1.cs
......\Form1.Designer.cs
......\Form1.resx
......\obj
......\...\x86
......\...\...\Debug
......\...\...\.....\DesignTimeResolveAssemblyReferences.cache
......\...\...\.....\DesignTimeResolveAssemblyReferencesInput.cache
......\...\...\.....\GenerateResource.read.1.tlog
......\...\...\.....\GenerateResource.write.1.tlog
......\...\...\.....\ResolveAssemblyReference.cache
......\...\...\.....\Sudoku.csproj.FileListAbsolute.txt
......\...\...\.....\Sudoku.exe
......\...\...\.....\Sudoku.Form1.resources
......\...\...\.....\Sudoku.pdb
......\...\...\.....\Sudoku.Properties.Resources.resources
......\...\...\.....\TempPE
......\Program.cs
......\Properties
......\..........\AssemblyInfo.cs
......\..........\Resources.Designer.cs
......\..........\Resources.resx
......\..........\Settings.Designer.cs
......\..........\Settings.settings
......\Sudoku.csproj
Sudoku.sln