diff --git a/GameModel/PinPicture.cs b/GameModel/PinPicture.cs
index e974ada..da21035 100644
--- a/GameModel/PinPicture.cs
+++ b/GameModel/PinPicture.cs
@@ -11,9 +11,8 @@ using System.Threading.Tasks;
 namespace GameModel
 {
     public record PinPicture(PinState PinState1, PinState PinState2, PinState PinState3, PinState PinState4, PinState PinState5, PinState PinState6, PinState PinState7, PinState PinState8, PinState PinState9)
-      : IEnumerable<PinState>, IEnumerable
+        : IEnumerable<PinState>, IEnumerable
     {
-        //private readonly List<PinState> pins = new List<PinState>();
         public static PinPicture Create(PinState pinState1, PinState pinState2, PinState pinState3, PinState pinState4, PinState pinState5, PinState pinState6, PinState pinState7, PinState pinState8, PinState pinState9)
         {
             return new PinPicture(pinState1, pinState2, pinState3, pinState4, pinState5, pinState6, pinState7, pinState8, pinState9);
@@ -63,7 +62,7 @@ namespace GameModel
         //}
         //}
 
-        List<PinState> _pins;
+        List<PinState>? _pins = null;
         private List<PinState> pins
         {
             get
@@ -131,7 +130,6 @@ namespace GameModel
         {
             get
             {
-                // count down-pins to respect na-pins
                 return DownCount == 0;
             }
         }