Some bugfixes.

PartyModes/PartyModeTicTacToe/PartyModeTicTacToe.cs

@@ -444,6 +444,7 @@ namespace Vocaluxe.PartyModes
 
         private void CreateRounds()
         {
+            GameData.Rounds = new List<Round>();
             //Prepare Player-IDs
             List<int> Team1 = new List<int>();
             List<int> Team2 = new List<int>();

PartyModes/PartyModeTicTacToe/PartyScreenTicTacToeMain.cs

@@ -616,7 +616,7 @@ namespace Vocaluxe.PartyModes
                 {
                     for (int c = 0; c < NumOneRow; c++)
                     {
-                        Possibilities[i, c] = (NumOneRow + 1) * c + (NumOneRow - 1);
+                        Possibilities[i, c] = (NumOneRow - 1) * c + (NumOneRow - 1);
                     }
                 }
             }