diff --git a/source/Trek-12/Models/Rules/Rules.cs b/source/Trek-12/Models/Rules/Rules.cs
index d9ef85a..90f91c4 100644
--- a/source/Trek-12/Models/Rules/Rules.cs
+++ b/source/Trek-12/Models/Rules/Rules.cs
@@ -10,15 +10,35 @@ namespace Models.Rules
     {
         public bool NearCell(Cell playerChoice, List<Cell> cells)
         {
-            foreach (var item in cells)
-            {
-                if(playerChoice.X == item.X +1 || playerChoice.X == item.X - 1
-                    || playerChoice.Y == item.Y +1 || playerChoice.Y == item.Y -1 )
+            foreach (var item in cells)
+            {
+                if(playerChoice.Pos.X == item.Pos.X +1 || playerChoice.Pos.X == item.Pos.X - 1
+                    || playerChoice.Pos.Y == item.Pos.Y +1 || playerChoice.Pos.Y == item.Pos.Y -1 )
                 {
                     return true;
-                }
+                }
             }
             return false;
         }
+
+        public bool IsCellEmpty(Cell playerChoice)
+        {
+            if (playerChoice.Value == null)
+            {
+                return true;
+            }
+
+            return false;
+        }
+
+        public bool IsCellValid(Cell playerChoice, List<Cell> cells)
+        {
+            if (NearCell(playerChoice, cells) && IsCellEmpty(playerChoice))
+            {
+                return true;
+            }
+
+            return false;
+        }
     }
 }