diff --git a/EduNetworkBuilder/ListBoxWindow.cs b/EduNetworkBuilder/ListBoxWindow.cs
index d015513..1549922 100644
--- a/EduNetworkBuilder/ListBoxWindow.cs
+++ b/EduNetworkBuilder/ListBoxWindow.cs
@@ -372,6 +372,62 @@ namespace EduNetworkBuilder
                     btnOK.Enabled = false;
                 }
             }
+            if (MyMode == LBContents.regressiontest)
+            {
+                cbLoadPuzzlesAtStart.Visible = false;
+                btnReset.Visible = false;
+                tbSearchBox.Visible = false;
+
+                PuzzleInfo pi;
+                string shown_name;
+                string puzzle_name = "";
+                List<string> Puzzles = NB.GetPuzzleNames();
+                NBSettings oursettings = NB.GetSettings();
+                if (Puzzles == null) return;
+                bool wasfinished = false;
+                foreach (string str in Puzzles)
+                {
+                    wasfinished = false;
+                    pi = NB.GetPuzzleInfoFromName(str);
+                    //shown_name = pi.PuzzleName;
+                    shown_name = pi.NetTitle.GetText();
+                    puzzle_name = pi.PuzzleName;
+                    if (oursettings.CheckIfDone(str))
+                    {
+                        wasfinished = true;
+                    }
+                    foreach (string tag in pi.PuzzleTags)
+                    {
+                        if (isChecked(tag))
+                        {
+                            MyPuzzleEntry MPE = new MyPuzzleEntry();
+                            MPE.PuzzleName = puzzle_name;
+                            MPE.Title = shown_name;
+                            MPE.isdone = wasfinished;
+                            MPE.level = tag;
+                            if (selected == "" && !wasfinished) selected = shown_name; //Select the first unfinished puzzle
+                            lbWindowData.Items.Add(MPE);
+                            break;
+                        }
+                    }
+                }
+                if (selected != null && selected != "")
+                {
+                    foreach (object one in lbWindowData.Items)
+                    {
+                        if (one.ToString() == selected)
+                            lbWindowData.SelectedItem = selected;
+                    }
+                }
+                if (lbWindowData.SelectedIndex != -1)
+                {
+                    btnOK.Enabled = true;
+                }
+                else
+                {
+                    btnOK.Enabled = false;
+                }
+            }
         }
 
         private void btnOK_Click(object sender, EventArgs e)