diff --git a/source/Trek-12/Models/Game/Game.cs b/source/Trek-12/Models/Game/Game.cs
index 377e9ed..115c712 100644
--- a/source/Trek-12/Models/Game/Game.cs
+++ b/source/Trek-12/Models/Game/Game.cs
@@ -101,7 +101,7 @@ namespace Models.Game
         public Dice Dice2 { get; private set; }
 
         [DataMember]
-        public int Turn { get; private set; }
+        public int Turn { get; set; }
 
         public Operation PlayerOperation { get; set; }
 
@@ -394,6 +394,11 @@ namespace Models.Game
             {
                 if (item.X == playerChoice.X && item.Y == playerChoice.Y)
                 {
+                    if (result > 12 || (result > 6 && item.IsDangerous == true))
+                    {
+                        item.SetPenalty();
+                        PlayerCell.SetPenalty();
+                    }
                     item.Value = result;
                     OnPropertyChanged(nameof(UsedMap.Boards));
                     return;
@@ -419,22 +424,22 @@ namespace Models.Game
                 where cell.Value != null && cell.Valid == true && cell != playerChoice
                 select cell;
 
-            foreach (var item in ValidCell)
-            {
+            foreach (var item in ValidCell)
+            {
                 if (!GameRules.IsCellAdjacent(playerChoice, item))
-                    continue;
-                if (!((playerChoice.Value - item.Value) == 1 || (playerChoice.Value - item.Value) == -1))
-                    continue;
+                    continue;
+                if (!((playerChoice.Value - item.Value) == 1 || (playerChoice.Value - item.Value) == -1))
+                    continue;
                 if (!GameRules.IsInRopePaths(item,UsedMap.RopePaths,index))
                 {
                     UsedMap.RopePaths.Add(new List<Cell> { playerChoice, item });
                     return;
-                }
+                }
                 if (!GameRules.AsValue(playerChoice, UsedMap.RopePaths, index))
                 {
                     UsedMap.RopePaths[index].Add(playerChoice);
                     return;
-                }
+                }
             }
         }
 
@@ -552,26 +557,17 @@ namespace Models.Game
             if (cell.X < 0 || cell.X >= UsedMap.Boards.Count / 6 || cell.Y < 0 || cell.Y >= 6)
             {
                 return false;
-                //throw new InvalidCellCoordinatesException("Invalid cell coordinates. Please choose again.");
             }
 
             if (!GameRules.IsCellValid(cell, UsedMap.Boards.ToList()))
             {
                 return false;
-                //throw new InvalidCellException("Cell is not valid. Please choose again.");
             }
 
-            bool res = true;
-            if (!res)
-            {
-                return false;
-                //throw new InvalidPlaceResultException("Cell is not valid for place result. Please choose again.");
-            }
             GameRules.IsZoneValidAndAddToZones(cell, UsedMap);
             AddToRopePath(cell, GameRules.EveryAdjacentCells(cell, UsedMap.Boards.ToList()));
             CellChosen?.Invoke(this, new CellChosenEventArgs(cell, result));
             return true;
-            //BoardUpdated?.Invoke(this, EventArgs.Empty);
         }
 
         /// <summary>
@@ -594,7 +590,7 @@ namespace Models.Game
             foreach (var cells in Boards)
                 if (cells.Penalty)
                 {
-                    if (cells.Valid == false || cells.Value == null)
+                    if (!cells.Valid || cells.Value == null)
                         continue;
                     result += 3;
                 }
@@ -605,7 +601,7 @@ namespace Models.Game
         {
             foreach (var cells in Boards)
             {
-                if (cells == null || cells.Value == null || cells.Valid == false)
+                if (cells == null || cells.Value == null || !cells.Valid)
                     continue;
                 if (!UsedMap.IsCellInZones(cells) && !UsedMap.IsCellInRopePath(cells))
                     cells.SetPenalty();
@@ -619,7 +615,7 @@ namespace Models.Game
             {
                 points += GameRules.ScoreRopePaths(UsedMap.RopePaths[i]);
             }
-            points += CalculusOfPenalty(UsedMap.Boards);
+            points -= CalculusOfPenalty(UsedMap.Boards);
             return points ?? 0;
         }
 
diff --git a/source/Trek-12/Models/Game/OperationCell.cs b/source/Trek-12/Models/Game/OperationCell.cs
index f5469d2..fd53a81 100644
--- a/source/Trek-12/Models/Game/OperationCell.cs
+++ b/source/Trek-12/Models/Game/OperationCell.cs
@@ -22,7 +22,7 @@ namespace Models.Game
                 if (isChecked == value)
                     return;
                 isChecked = value;
-                OnPropertyChanged("IsChecked");
+                OnPropertyChanged(nameof(IsChecked));
             }
         }
 
diff --git a/source/Trek-12/Models/Rules/Rules.cs b/source/Trek-12/Models/Rules/Rules.cs
index 42b28e7..6852e74 100644
--- a/source/Trek-12/Models/Rules/Rules.cs
+++ b/source/Trek-12/Models/Rules/Rules.cs
@@ -25,6 +25,8 @@ namespace Models.Rules
         {
             if (!IsCellEmpty(playerChoicePosition)) return false;
 
+            if (playerChoicePosition.Valid == false) return false;
+
             if (EveryAdjacentCells(playerChoicePosition, cells).Count == 1) return false;
 
             return true;
diff --git a/source/Trek-12/Tests/GameTests.cs b/source/Trek-12/Tests/GameTests.cs
index 7ae0a55..97d388c 100644
--- a/source/Trek-12/Tests/GameTests.cs
+++ b/source/Trek-12/Tests/GameTests.cs
@@ -251,13 +251,17 @@ public class GameTests
         Assert.NotNull(_game.GameRules);
         _game.UsedMap.Boards[0].Value = 1;
         _game.UsedMap.Boards[1].Value = 2;
+        _game.UsedMap.Boards[0].Valid = true;
+        _game.UsedMap.Boards[1].Valid = true;
+        _game.UsedMap.Boards[2].Valid = true;
 
         var methodInfo = typeof(Game).GetMethod("PlaceResult", BindingFlags.NonPublic | BindingFlags.Instance);
         Assert.NotNull(methodInfo);
 
-        var cell = new Cell(0, 2);
-        cell.Value = 3;
-        methodInfo.Invoke(_game, new object[] { cell, 3 });
+        _game.PlayerCell = new Cell(2, 0);
+        _game.PlayerCell.Value = 3;
+        methodInfo.Invoke(_game, new object[] { _game.PlayerCell, 3 });
+        //_game.UsedMap.Boards[2].Value = _game.PlayerCell.Value;
 
         Assert.Equal(3, _game.UsedMap.Boards[2].Value);
     }
@@ -270,8 +274,11 @@ public class GameTests
 
         _game.InitializeGame(map, player, false);
 
-        var cell = new Cell(0, 1);
+        var cell = new Cell(1, 0);
+        cell.Valid = true;
+        _game.UsedMap.Boards[0].Valid = true;
         _game.UsedMap.Boards[0].Value = 1;
+        _game.UsedMap.Boards[1].Valid = true;
         bool result = _game.HandlePlayerChoice(cell, 1);
         Assert.True(result);
     }
@@ -329,14 +336,16 @@ public class GameTests
         var player = new Player("test_player", "DefaultProfilePicture");
         var map = new Map("test_name", "test_background.png");
         _game.InitializeGame(map, player, false);
+        _game.UsedMap.Boards[1].Valid = true;
+        _game.UsedMap.Boards[2].Valid = true;
         _game.UsedMap.Boards[1].Value = 5;
 
         var methodInfo = typeof(Game).GetMethod("PlaceResult", BindingFlags.NonPublic | BindingFlags.Instance);
         Assert.NotNull(methodInfo);
 
-        var cell = new Cell(0, 2);
-        cell.Value = 14;
-        methodInfo.Invoke(_game, new object[] { cell, 14 });
+        _game.PlayerCell = new Cell(2, 0);
+        _game.PlayerCell.Value = 14;
+        methodInfo.Invoke(_game, new object[] { _game.PlayerCell, 14 });
 
         Assert.True(_game.UsedMap.Boards[2].Penalty);
     }
@@ -347,15 +356,19 @@ public class GameTests
         var player = new Player("test_player", "DefaultProfilePicture");
         var map = new Map("test_name", "test_background.png");
         _game.InitializeGame(map, player, false);
+
+        _game.UsedMap.Boards[1].Valid = true;
+        _game.UsedMap.Boards[2].Valid = true;
+
         _game.UsedMap.Boards[1].Value = 5;
         _game.UsedMap.Boards[2].IsDangerous = true;
 
         var methodInfo = typeof(Game).GetMethod("PlaceResult", BindingFlags.NonPublic | BindingFlags.Instance);
         Assert.NotNull(methodInfo);
 
-        var cell = new Cell(0, 2);
-        cell.Value = 7;
-        methodInfo.Invoke(_game, new object[] { cell, 7 });
+        _game.PlayerCell = new Cell(2, 0);
+        _game.PlayerCell.Value = 7;
+        methodInfo.Invoke(_game, new object[] { _game.PlayerCell, 7 });
 
         Assert.True(_game.UsedMap.Boards[2].Penalty);
     }
@@ -415,42 +428,133 @@ public class GameTests
     }
 
     [Fact]
-    public void CalculusOfPenalty_ReallyCalculusPenalty()
+    public void CalculusOfPenalty_ReallyCalculusPenalty_ForZonesAndDangerousCellsAndOverTwelve()
     {
         var player = new Player("test_player", "DefaultProfilePicture");
         var map = new Map("test_name", "test_background.png");
         _game.InitializeGame(map, player, false);
-        var methodInfo = typeof(Game).GetMethod("AddToRopePath", BindingFlags.NonPublic | BindingFlags.Instance);
-        Assert.NotNull(methodInfo);
 
-        _game.UsedMap.Boards[0].Valid = true;
-        _game.UsedMap.Boards[1].Valid = true;
-        _game.UsedMap.Boards[2].Valid = true;
-        _game.UsedMap.Boards[3].Valid = true;
+        _game.UsedMap.Boards[7].Valid = true;
+        _game.UsedMap.Boards[8].Valid = true;
+        _game.UsedMap.Boards[9].Valid = true;
+        _game.UsedMap.Boards[10].Valid = true;
+        _game.UsedMap.Boards[11].Valid = true;
+        _game.UsedMap.Boards[12].Valid = true;
 
+        _game.UsedMap.Boards[10].Value = 2; // 1,3 // penalty
+        _game.UsedMap.Boards[7].Value = 5; // 1,0
+        _game.UsedMap.Boards[8].Value = 5; // 1,1
+        _game.UsedMap.Boards[9].Value = 5; // 1,2
+
+        var place = typeof(Game).GetMethod("PlaceResult", BindingFlags.NonPublic | BindingFlags.Instance);
+        Assert.NotNull(place);
+
+        _game.PlayerCell = new Cell(4, 1);
+        _game.PlayerCell.Value = 7;
+        _game.PlayerCell.Valid = true;
+        _game.PlayerCell.IsDangerous = true;
+        place.Invoke(_game, new object[] { _game.PlayerCell, 7 }); //One penalty
+
+        _game.PlayerCell = new Cell(5, 1);
+        _game.PlayerCell.Value = 14;
+        _game.PlayerCell.Valid = true;
+        place.Invoke(_game, new object[] { _game.PlayerCell, 14 });
+
+
+        foreach (var cells in _game.UsedMap.Boards.ToList())
+        {
+            _game.GameRules.IsZoneValidAndAddToZones(cells, _game.UsedMap);
+        }
 
-        _game.UsedMap.Boards[0].Value = 0;
-        methodInfo.Invoke(_game, new object[] { _game.UsedMap.Boards[0], _game.GameRules.EveryAdjacentCells(_game.UsedMap.Boards[0], _game.UsedMap.Boards.ToList()) });
-        _game.UsedMap.Boards[1].Value = 1;
-        methodInfo.Invoke(_game, new object[] { _game.UsedMap.Boards[1], _game.GameRules.EveryAdjacentCells(_game.UsedMap.Boards[1], _game.UsedMap.Boards.ToList()) });
-        _game.UsedMap.Boards[2].Value = 2;
-        methodInfo.Invoke(_game, new object[] { _game.UsedMap.Boards[2], _game.GameRules.EveryAdjacentCells(_game.UsedMap.Boards[2], _game.UsedMap.Boards.ToList()) });
-        _game.UsedMap.Boards[3].Value = 5;
-        
         _game.PutPenaltyForLostCells(_game.UsedMap.Boards);
 
-        Assert.True(_game.UsedMap.Boards[3].Penalty);
+        Assert.True(_game.UsedMap.Boards[11].Penalty);
+        Assert.Equal(9, _game.CalculusOfPenalty(_game.UsedMap.Boards));
 
-        Assert.Equal(3, _game.CalculusOfPenalty(_game.UsedMap.Boards));
+    }
 
+    [Fact]
+    public void DoesDeleteGame_ReallyDeleteGame()
+    {
+        Game game = new Game();
+        Game game1 = new Game();
+        game.AddGame(game);
+        game.AddGame(game1);
+        game.DeleteGame();
+        Assert.DoesNotContain(game1, game.Games);
     }
 
+
     [Fact]
-    public void CalculusOfPenalty_ReallyCalculusPenalty_ForZonesAndDangerousCellsAndOverTwelve()
+    public void DoesDeleteGame_DoNotDeleteNoGame()
     {
-        var player = new Player("test_player", "DefaultProfilePicture");
-        var map = new Map("test_name", "test_background.png");
-        _game.InitializeGame(map, player, false);
+        bool res = _game.DeleteGame();
+        Assert.False(res);
+    }
+
+    [Fact]
+    public void CanIModifyAPlayer()
+    {
+        Game game = new Game();
+        Player player = new Player("test", "DefaultProfilePicture");
+        game.AddPlayer(player);
+        game.ModifyPlayer("test", "newName");
+        Assert.Equal("newName", game.Players[0].Pseudo);
+    }
+
+    [Fact]
+    public void CanIModifyANonExistentPlayer()
+    {
+        Game game = new Game();
+        var res = game.ModifyPlayer("nope", "newName");
+        Assert.False(res);
+    }
+
+    [Fact]
+    public void CanIRollDice()
+    {
+        _game.InitializeGame(new Map("test", "test.png"), new Player("test", "test.png"), false);
+        _game.RollAllDice();
+        Assert.NotNull(_game.Dice1);
+        Assert.NotNull(_game.Dice2);
+        Assert.True(_game.Dice1.Value >= 0 && _game.Dice1.Value <= 5 );
+        Assert.True(_game.Dice2.Value >= 1 && _game.Dice2.Value <= 6 );
+    }
+
+    [Fact]
+    public void CanIStartGame()
+    {
+        _game.InitializeGame(new Map("test", "test.png"), new Player("test", "test.png"), false);
+
+        var start = typeof(Game).GetMethod("StartGame", BindingFlags.NonPublic | BindingFlags.Instance);
+        Assert.NotNull(start);
+        
+        start.Invoke(_game, null);
+
+        Assert.True(_game.IsRunning);
+    }
+
+    [Fact]
+    public void CanIEndGame()
+    {
+        _game.InitializeGame(new Map("test", "test.png"), new Player("test", "test.png"), false);
+
+        var start = typeof(Game).GetMethod("StartGame", BindingFlags.NonPublic | BindingFlags.Instance);
+        Assert.NotNull(start);
+
+        start.Invoke(_game, null);
+        var end = typeof(Game).GetMethod("EndGame", BindingFlags.NonPublic | BindingFlags.Instance);
+        Assert.NotNull(end);
+
+        end.Invoke(_game, new object[] { 14 } );
+
+        Assert.False(_game.IsRunning);
+    }
+
+    [Fact]
+    public void CalculusOfPointsWorksWellOrNot()
+    {
+        _game.InitializeGame(new Map("test", "test.png"), new Player("test", "test.png"), false);
 
         _game.UsedMap.Boards[7].Valid = true;
         _game.UsedMap.Boards[8].Valid = true;
@@ -459,24 +563,20 @@ public class GameTests
         _game.UsedMap.Boards[11].Valid = true;
         _game.UsedMap.Boards[12].Valid = true;
 
-        _game.UsedMap.Boards[10].Value = 2; // 1,3 // penalty
-        _game.UsedMap.Boards[7].Value = 5; // 1,0
-        _game.UsedMap.Boards[8].Value = 5; // 1,1
-        _game.UsedMap.Boards[9].Value = 5; // 1,2
+        _game.UsedMap.Boards[10].Value = 2; // penalty (- 3)
+        _game.UsedMap.Boards[7].Value = 5; //5 + 2 = 7
+        _game.UsedMap.Boards[8].Value = 5;
+        _game.UsedMap.Boards[9].Value = 5;
 
         var place = typeof(Game).GetMethod("PlaceResult", BindingFlags.NonPublic | BindingFlags.Instance);
         Assert.NotNull(place);
 
-        var cell = new Cell(1, 4);
-        cell.Value = 7;
-        cell.Valid = true;
-        cell.IsDangerous = true;
-        place.Invoke(_game, new object[] { cell, 7 }); //One penalty
+        _game.PlayerCell = new Cell(4, 1);
+        _game.PlayerCell.Value = 7;
+        _game.PlayerCell.Valid = true;
+        _game.PlayerCell.IsDangerous = true;
+        place.Invoke(_game, new object[] { _game.PlayerCell, 7 }); //One penalty
 
-        var othercell = new Cell(1, 5);
-        cell.Value = 14;
-        cell.Valid = true;
-        place.Invoke(_game, new object[] { othercell, 14 });
 
 
         foreach (var cells in _game.UsedMap.Boards.ToList())
@@ -487,7 +587,39 @@ public class GameTests
         _game.PutPenaltyForLostCells(_game.UsedMap.Boards);
 
         Assert.True(_game.UsedMap.Boards[11].Penalty);
-        Assert.Equal(9, _game.CalculusOfPenalty(_game.UsedMap.Boards));
 
+        Assert.Equal(1, _game.FinalCalculusOfPoints());
+    }
+
+    [Fact]
+    public void CalculusOfPointsWorksWellOrNotForRopePathes()
+    {
+        _game.InitializeGame(new Map("test", "test.png"), new Player("test", "test.png"), false);
+
+        var methodInfo = typeof(Game).GetMethod("AddToRopePath", BindingFlags.NonPublic | BindingFlags.Instance);
+        Assert.NotNull(methodInfo);
+        _game.Turn = 2;
+        _game.UsedMap.Boards[7].Valid = true;
+        _game.UsedMap.Boards[8].Valid = true;
+        _game.UsedMap.Boards[9].Valid = true;
+        _game.UsedMap.Boards[10].Valid = true;
+
+        _game.UsedMap.Boards[7].Value = 5; //7 + 2 = 9
+        methodInfo.Invoke(_game, new object[] { _game.UsedMap.Boards[7], _game.UsedMap.Boards.ToList() });
+        _game.UsedMap.Boards[8].Value = 6;
+        methodInfo.Invoke(_game, new object[] { _game.UsedMap.Boards[8], _game.UsedMap.Boards.ToList() });
+        _game.UsedMap.Boards[9].Value = 7;
+        methodInfo.Invoke(_game, new object[] { _game.UsedMap.Boards[9], _game.UsedMap.Boards.ToList() });
+        _game.UsedMap.Boards[10].Value = 2; // penalty (- 3)
+        methodInfo.Invoke(_game, new object[] { _game.UsedMap.Boards[10], _game.UsedMap.Boards.ToList() });
+
+
+        _game.PutPenaltyForLostCells(_game.UsedMap.Boards);
+
+
+        Assert.True(_game.UsedMap.Boards[10].Penalty);
+
+        Assert.Equal(6, _game.FinalCalculusOfPoints());
     }
+
 }
diff --git a/source/Trek-12/Tests/RulesTests.cs b/source/Trek-12/Tests/RulesTests.cs
index b493df7..ee82959 100644
--- a/source/Trek-12/Tests/RulesTests.cs
+++ b/source/Trek-12/Tests/RulesTests.cs
@@ -44,6 +44,7 @@ public class RulesTests
     {
         Rules rules = new Rules();
         Map map = new Map("test", "background");
+        map.Boards[0].Valid = true;
         Cell selectedCell = map.Boards[0];
         Assert.True(rules.IsCellValid(selectedCell, map.Boards.ToList()));
     }