diff --git a/lib/main.dart b/lib/main.dart
index 9c5a0e6..9d30210 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -62,7 +62,6 @@ class _MyHomePageState extends State<MyHomePage> implements IGameConsumer {
     game = Game(this);
     _grid = List.generate(widget.gridSize,
         (index) => List.generate(widget.gridSize, (index) => Stone()));
-    game.start();
   }
 
   @override
@@ -78,63 +77,99 @@ class _MyHomePageState extends State<MyHomePage> implements IGameConsumer {
         ],
       ),
       body: Center(
-        child: Column(
-          children: [
-            Padding(
-              padding: const EdgeInsets.all(8.0),
-              child: Text(
-                'Score: $_score',
-                style: const TextStyle(fontSize: 24),
-              ),
-            ),
-            Expanded(
-              child: GridView.builder(
-                gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
-                  crossAxisCount: widget.gridSize,
-                ),
-                itemCount: widget.gridSize * widget.gridSize,
-                itemBuilder: (BuildContext context, int index) {
-                  int row = index ~/ widget.gridSize;
-                  int col = index % widget.gridSize;
-                  StoneLocation location = StoneLocation(row: row, column: col);
-                  Stone? stone = game.getStone(location);
-
-                  // Überprüfen, ob der Stein in sl1 gespeichert ist
-                  bool isSelected = (sl1 != null && sl1!.row == row && sl1!.column == col);
-
-                  return GestureDetector(
-                    onTap: () {
-                      setState(() {
-                        handleTap(row, col);
-                      });
-                    },
-                    child: Container(
-                      margin: const EdgeInsets.all(2),
-                      decoration: BoxDecoration(
-                        borderRadius: BorderRadius.circular(8),
-                        color: _getColorForStone(stone),
-                        border: Border.all(
-                          color: isSelected ? Colors.black : Colors.transparent,
-                          width: 5,
-                        ),
-                      ),
-                      child: Center(
-                        child: Text(
-                          _getStoneColorText(stone) + row.toString() + col.toString(),
-                          style: const TextStyle(color: Colors.white),
-                        ),
-                      ),
-                    ),
-                  );
-                },
-              ),
-            ),
-          ],
-        ),
+        child: game.running ? _buildGameGrid() : _buildStartButton(),
       ),
     );
   }
 
+  Widget _buildStartButton() {
+    return ElevatedButton(
+      onPressed: () {
+        setState(() {
+          game.start();
+        });
+      },
+      child: const Text("Start"),
+    );
+  }
+
+  Widget _buildGameGrid() {
+    return Column(
+      children: [
+        Padding(
+          padding: const EdgeInsets.all(8.0),
+          child: Text(
+            'Score: $_score',
+            style: const TextStyle(fontSize: 24),
+          ),
+        ),
+        Expanded(
+          child: Align(
+            alignment: Alignment.topCenter,
+            child: LayoutBuilder(
+              builder: (BuildContext context, BoxConstraints constraints) {
+                double gridSize = widget.gridSize * 104.0;
+                double maxGridSize =
+                    constraints.maxWidth < constraints.maxHeight
+                        ? constraints.maxWidth
+                        : constraints.maxHeight;
+
+                double adjustedGridSize =
+                    gridSize > maxGridSize ? maxGridSize : gridSize;
+
+                return SizedBox(
+                  width: adjustedGridSize,
+                  height: adjustedGridSize,
+                  child: GridView.builder(
+                    gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
+                      crossAxisCount: widget.gridSize,
+                    ),
+                    itemCount: widget.gridSize * widget.gridSize,
+                    itemBuilder: (BuildContext context, int index) {
+                      int row = index ~/ widget.gridSize;
+                      int col = index % widget.gridSize;
+                      StoneLocation location =
+                          StoneLocation(row: row, column: col);
+                      Stone? stone = game.getStone(location);
+
+                      bool isSelected = (sl1 != null &&
+                          sl1!.row == row &&
+                          sl1!.column == col);
+
+                      return GestureDetector(
+                        onTap: () {
+                          setState(() {
+                            handleTap(row, col);
+                          });
+                        },
+                        child: Container(
+                          width: 100,
+                          height: 100,
+                          margin: const EdgeInsets.all(2),
+                          decoration: BoxDecoration(
+                            borderRadius: BorderRadius.circular(8),
+                            color: _getColorForStone(stone),
+                            border: Border.all(
+                              color: isSelected
+                                  ? Colors.black
+                                  : Colors.transparent,
+                              width: 5,
+                            ),
+                          ),
+                        ),
+                      );
+                    },
+                  ),
+                );
+              },
+            ),
+          ),
+        ),
+        const Spacer(),
+      ],
+    );
+  }
+
   Color _getColorForStone(Stone? stone) {
     // Beispielhafte Farben basierend auf dem Stein.
     switch (stone?.getStoneColor()) {
@@ -153,11 +188,6 @@ class _MyHomePageState extends State<MyHomePage> implements IGameConsumer {
     }
   }
 
-  String _getStoneColorText(Stone? stone) {
-    if (stone == null) return 'Unknown';
-    return stone.getStoneColor().toString().split('.').last;
-  }
-
   @override
   void gameStopped() {
     // TODO: implement gameStopped
@@ -191,14 +221,13 @@ class _MyHomePageState extends State<MyHomePage> implements IGameConsumer {
     return game;
   }
 
-  void handleTap(int row, int col){
-    if(sl1 == null){
+  void handleTap(int row, int col) {
+    if (sl1 == null) {
       sl1 = StoneLocation(row: row, column: col);
       return;
-    }
-    else{
+    } else {
       game.swapStones(sl1!, StoneLocation(row: row, column: col));
       sl1 = null;
     }
   }
-}
\ No newline at end of file
+}