diff --git a/src/EnumDecision.cs b/src/EnumDecision.cs
index 56b236f..e4783cd 100644
--- a/src/EnumDecision.cs
+++ b/src/EnumDecision.cs
@@ -2,9 +2,9 @@
 
 namespace WorldOfPeacecraft
 {
-	public enum Decision
-	{
-		FIGHT, REST, STAG, BUNNY, SWORD, ALCHEMY, MAGIC
-	}
+    public enum Decision
+    {
+        FIGHT, REST, STAG, BUNNY, SWORD, ALCHEMY, MAGIC
+    }
 }
 
diff --git a/src/GameStrategy.cs b/src/GameStrategy.cs
index 93c5058..5507dec 100644
--- a/src/GameStrategy.cs
+++ b/src/GameStrategy.cs
@@ -5,38 +5,42 @@ using System.Text;
 
 namespace WorldOfPeacecraft
 {
-    class GameStrategy
+    class GameStrategy : IGame
     {
 
-
+        Decision cooperate;
+        Decision defect;
         int counter = 0;
 
-        public GameStrategy()
+        public GameStrategy(Decision cooperate, Decision defect)
         {
+            this.cooperate = cooperate;
+            this.defect = defect;
+
         }
 
-        public bool getFirstMove()
+        public Decision getFirstMove()
         {
-            return true;
+            return cooperate;
         }
 
-        public bool nextMove(bool opCooperated)
+        public Decision nextMove(Decision opLM)
         {
-            if (opCooperated && counter==0)
+            if (opLM == cooperate && counter == 0)
             {
-                return true;
+                return cooperate;
             }
             else
             {
                 counter++;
                 if (counter < 10)
                 {
-                    return false;
+                    return defect;
                 }
                 else
                 {
                     counter = 0;
-                    return false;
+                    return defect;
 
                 }
             }
diff --git a/src/Skirmish.cs b/src/Skirmish.cs
index 1a7be41..901b323 100644
--- a/src/Skirmish.cs
+++ b/src/Skirmish.cs
@@ -5,7 +5,7 @@ using System.Text;
 
 namespace WorldOfPeacecraft
 {
-    class Skirmish
+    class Skirmish : IGame
     {
         Random random = new Random();