diff --git a/source/Trek-12/Models/Rules/Zones.cs b/source/Trek-12/Models/Rules/Zones.cs
new file mode 100644
index 0000000..bc99d7d
--- /dev/null
+++ b/source/Trek-12/Models/Rules/Zones.cs
@@ -0,0 +1,43 @@
+namespace Models.Rules;
+
+public class Zones
+{
+    public bool IsZone(Cell playerChoice, List<Cell> cells)
+    {
+        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)
+            {
+                if (playerChoice.Value == item.Value)
+                {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+    
+    public bool IsCheminDeCorde(Cell playerChoice, List<Cell> cells, List<Cell> cheminsDeCorde)
+    {
+        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)
+            {
+                if (playerChoice.Value == item.Value+1 || playerChoice.Value == item.Value-1)
+                {
+                    foreach (var chemin in cheminsDeCorde)
+                    {
+                        if (chemin.Equals(playerChoice))
+                        {
+                            return true;
+                        }
+                    }
+                    return IsCheminDeCorde(item, cells, cheminsDeCorde);
+                }
+            }
+        }
+        return false;
+    }
+}
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