File list (Check if you may need any files):
8Puzzle\8Puzzle.csproj
.......\8Puzzle.sln
.......\8Puzzle.suo
.......\bin\Debug\8Puzzle.exe
.......\...\.....\8Puzzle.pdb
.......\...\.....\8Puzzle.vshost.exe
.......\...\.....\Sample Input\a.txt
.......\...\.....\............\b.txt
.......\...\.....\............\c.txt
.......\...\.....\............\d.txt
.......\...\.....\Sample Input
.......\...\Debug
.......\...\Release\8Puzzle.exe
.......\...\.......\8Puzzle.pdb
.......\...\Release
.......\bin
.......\Form1.cs
.......\Form1.Designer.cs
.......\Form1.resx
.......\frmSolution.cs
.......\frmSolution.Designer.cs
.......\frmSolution.resx
.......\Hurestic2.cs
.......\Line.cs
.......\Node.cs
.......\NodeState.cs
.......\obj\8Puzzle.csproj.FileList.txt
.......\...\Debug\8Puzzle.csproj.GenerateResource.Cache
.......\...\.....\8Puzzle.exe
.......\...\.....\8Puzzle.pdb
.......\...\.....\Refactor
.......\...\.....\TempPE
.......\...\.....\_Puzzle.Form1.resources
.......\...\.....\_Puzzle.frmSolution.resources
.......\...\.....\_Puzzle.Properties.Resources.resources
.......\...\Debug
.......\...\Release\8Puzzle.csproj.GenerateResource.Cache
.......\...\.......\8Puzzle.exe
.......\...\.......\8Puzzle.pdb
.......\...\.......\Refactor
.......\...\.......\TempPE
.......\...\.......\_Puzzle.Form1.resources
.......\...\.......\_Puzzle.frmSolution.resources
.......\...\.......\_Puzzle.Properties.Resources.resources
.......\...\Release
.......\obj
.......\Program.cs
.......\...perties\AssemblyInfo.cs
.......\..........\Resources.Designer.cs
.......\..........\Resources.resx
.......\..........\Settings.Designer.cs
.......\..........\Settings.settings
.......\Properties
.......\Result.cs
8Puzzle