diff --git a/src/backend/Simulator.java b/src/backend/Simulator.java
index be99618..a4652a4 100644
--- a/src/backend/Simulator.java
+++ b/src/backend/Simulator.java
@@ -49,7 +49,12 @@ public class Simulator extends Thread {
 		
 		//Default rule : Survive always, birth never
 		for(int i =0; i<9; i++) {
-			fieldSurviveValues.add(i);
+			if (i==2 || i==3) {
+				fieldSurviveValues.add(i);
+			}
+			if (i==3) {
+				fieldBirthValues.add(i);
+			}
 		}
 		
 	}