diff --git a/src/Life.java b/src/Life.java
index 84ab855..8ef92e9 100644
--- a/src/Life.java
+++ b/src/Life.java
@@ -49,7 +49,37 @@ public class Life implements ILife {
 
   @Override
   public ILife nextGeneration() {
-    // TODO Auto-generated method stub
+    public ILife nextGeneration() {
+      Life newLife = new Life();
+
+      // Prüfe alle Zellen im aktuellen Spielfeld
+      for (int y = 0; y < height; y++) {
+        for (int x = 0; x < width; x++) {
+          int neighbors = countAliveNeighbors(x, y);
+
+          if (isAlive(x, y)) {
+            // Regel: Weniger als 2 Nachbarn → Zelle stirbt
+            if (neighbors < 2) {
+              newLife.setDead(x, y);
+            } else {
+              newLife.setAlive(x, y);
+            }
+          }
+        }
+      }
+      return newLife;
+    }
+
+
+    private int countAliveNeighbors(int x, int y) {
+      int count = 0;
+      for (int dy = -1; dy <= 1; dy++) {
+        for (int dx = -1; dx <= 1; dx++) {
+          if (dx == 0 && dy == 0) continue; // Eigene Zelle ignorieren
+          if (isAlive(x + dx, y + dy)) count++;
+        }
+      }
+    }
     return null;
   }
 }
\ No newline at end of file
diff --git a/test/LifeTest.java b/test/LifeTest.java
index bd005b1..2d6f42b 100644
--- a/test/LifeTest.java
+++ b/test/LifeTest.java
@@ -33,6 +33,7 @@ public class LifeTest {
 
     @Test
     public void keepAliveCell() {
+
     }