diff --git a/Memory.Gui/MainWindow.xaml b/Memory.Gui/MainWindow.xaml
index c0b9df9..689e7bd 100644
--- a/Memory.Gui/MainWindow.xaml
+++ b/Memory.Gui/MainWindow.xaml
@@ -16,7 +16,7 @@
             <TextBox HorizontalAlignment="Left" VerticalAlignment="Top" Margin="330,255,0,0" Width="280" Height="40" FontSize="24" Name="Name"></TextBox>
             <Label Content="Pairs of cards in deck:" HorizontalAlignment="Left" VerticalAlignment="Top" FontSize="30px" Margin="120,300,0,0"></Label>
             <Button Content="←" HorizontalAlignment="Left" VerticalAlignment="Top" FontSize="30px" Margin="470,300,0,0" Click="Decrease"></Button>
-            <Label Content="5" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="535,300,0,0" FontSize="30px" Name="DeckSize"></Label>
+            <Label Content="{Binding DeckSize}" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="535,300,0,0" FontSize="30px" Name="Size"></Label>
             <Button Content="→" HorizontalAlignment="Left" VerticalAlignment="Top" FontSize="30px" Margin="600,300,0,0" Click="Increase"></Button>
             <Label Content="Name must be between 2 and 32 characters." HorizontalAlignment="Center" VerticalAlignment="Top" Margin="0,335,0,0" FontSize="16" Foreground="Red" Name="ErrorLabel" Visibility="Hidden"></Label>
             <Button Content="Start" HorizontalAlignment="Center" VerticalAlignment="Top" FontSize="50px" Margin="0,360,0,0" Width="240" Height="80" Click="StartGame"></Button>
diff --git a/Memory.Gui/MainWindow.xaml.cs b/Memory.Gui/MainWindow.xaml.cs
index e9faba0..9b0323b 100644
--- a/Memory.Gui/MainWindow.xaml.cs
+++ b/Memory.Gui/MainWindow.xaml.cs
@@ -5,10 +5,11 @@ using System.Windows.Controls;
 using System.Windows.Media;
 using System.Windows.Data;
 using System.Windows.Media.Imaging;
+using System.ComponentModel;
 
 namespace Memory.Gui
 {
-    public partial class MainWindow : Window
+    public partial class MainWindow : Window, INotifyPropertyChanged
     {
         public const int SCOREPADDING = 160;
         public const int SCOREMARGIN = 30;
@@ -16,11 +17,21 @@ namespace Memory.Gui
         public const int GRIDHEIGHT = 500;
 
         private Game? game;
-        private int deckSize = 5;
+        private int _deckSize = 5;
+
+        public int DeckSize { get => _deckSize; set
+            {
+                _deckSize = value;
+                OnPropertyChanged(nameof(DeckSize));
+            }
+        }
+
+        public event PropertyChangedEventHandler? PropertyChanged;
 
         public MainWindow()
         {
             InitializeComponent();
+            DataContext = this;
         }
 
         private void StartGame(object sender, RoutedEventArgs args)
@@ -32,7 +43,7 @@ namespace Memory.Gui
             }
             else
             {
-                game = new(new ScoreHandler(), name, deckSize);
+                game = new(new ScoreHandler(), name, DeckSize);
                 ErrorLabel.Visibility = Visibility.Hidden;
                 StartScreen.Visibility = Visibility.Hidden;
                 FinishScreen.Visibility = Visibility.Hidden;
@@ -42,17 +53,9 @@ namespace Memory.Gui
             }
         }
 
-        private void Decrease(object sender, RoutedEventArgs args)
-        {
-            deckSize = Math.Max(deckSize - 1, 2);
-            DeckSize.Content = deckSize;
-        }
-
-        private void Increase(object sender, RoutedEventArgs args)
-        {
-            deckSize = Math.Min(deckSize + 1, 10);
-            DeckSize.Content = deckSize;
-        }
+        protected void OnPropertyChanged(string propertyName) => PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+        private void Decrease(object sender, RoutedEventArgs args) => DeckSize = Math.Max(DeckSize - 1, 2);
+        private void Increase(object sender, RoutedEventArgs args) => DeckSize = Math.Min(DeckSize + 1, 10);
 
         private void DrawScores()
         {
@@ -85,7 +88,7 @@ namespace Memory.Gui
         {
             Cards.ColumnDefinitions.Clear();
             Cards.RowDefinitions.Clear();
-            Deck grid = Game.GetGridSize(deckSize);
+            Deck grid = Game.GetGridSize(DeckSize);
             int columns = grid.Columns;
             int rows = grid.Rows;
             for (int i = 0; i < columns; i++)
@@ -117,7 +120,7 @@ namespace Memory.Gui
         private void Redraw()
         {
             Cards.Children.Clear();
-            Deck grid = Game.GetGridSize(deckSize);
+            Deck grid = Game.GetGridSize(DeckSize);
             for (int i = 0; i < game!.Cards.Count; i++)
             {
                 Card card = game.Cards[i];