diff --git a/landlords-common/src/main/java/org/nico/ratel/landlords/helper/PokerHelper.java b/landlords-common/src/main/java/org/nico/ratel/landlords/helper/PokerHelper.java
index 6e897f5..371e94c 100644
--- a/landlords-common/src/main/java/org/nico/ratel/landlords/helper/PokerHelper.java
+++ b/landlords-common/src/main/java/org/nico/ratel/landlords/helper/PokerHelper.java
@@ -13,8 +13,15 @@ import org.nico.ratel.landlords.enums.PokerType;
 import org.nico.ratel.landlords.enums.SellType;
 
 public class PokerHelper {
-
+	
+	/**
+	 * Print the type of poker style 
+	 */
 	public static int pokerPrinterType = 0;
+	
+	/**
+	 * The list of all pokers, by 54
+	 */
 	private static List<Poker> basePokers = new ArrayList<Poker>(54);
 
 	private static Comparator<Poker> pokerComparator = new Comparator<Poker>() {
@@ -369,4 +376,72 @@ public class PokerHelper {
 		}
 		return builder.toString();
 	}
+	
+	public static List<PokerSell> parsePokerSells(List<Poker> pokers){
+		List<PokerSell> allPokerSell = new ArrayList<>();
+		//single or double or three or four
+		int count = 0;
+		int lastLevel = -1;
+		List<Poker> ps = new ArrayList<>();
+		for(int index = 0; index < pokers.size(); index ++){
+			int level = pokers.get(index).getLevel().getLevel();
+			if(lastLevel == -1 || level == lastLevel){
+				++ count;
+				ps.add(pokers.get(index));
+			}else{
+				count = 0;
+				ps.clear();
+			}
+			if(count == 1){
+				allPokerSell.add(new PokerSell(level, SellType.SINGLE, ps));
+			}else if(count == 2){
+				allPokerSell.add(new PokerSell(level, SellType.DOUBLE, ps));
+			}else if(count == 3){
+				allPokerSell.add(new PokerSell(level, SellType.THREE, ps));
+			}else if(count == 4){
+				allPokerSell.add(new PokerSell(level + 999, SellType.BOMB, ps));
+			}
+		}
+		
+		
+		return null;
+	}
+	
+	public static int parsePokerColligationScore(List<Poker> pokers){
+		int score = 0;
+		int count = 0;
+		int increase = 0;
+		int lastLevel = -1;
+		if(pokers != null && ! pokers.isEmpty()){
+			for(int index = 0; index < pokers.size(); index ++){
+				int level = pokers.get(index).getLevel().getLevel();
+				if(lastLevel == -1){
+					increase ++;
+					count ++;
+					score += lastLevel;
+				}else{
+					if(level == lastLevel){
+						++ count;
+					}else{
+						count = 0;
+					}
+					if(level < PokerLevel.LEVEL_2.getLevel() && level - 1 == lastLevel){
+						++ increase;
+					}else{
+						increase = 0;
+					}
+					
+					score += (count + (increase > 4 ? increase : 0)) * level;
+				}
+				
+				if(level == PokerLevel.LEVEL_2.getLevel()){
+					score += level * 2;
+				}else if(level > PokerLevel.LEVEL_2.getLevel()){
+					score += level * 3;
+				}
+				lastLevel = level;
+			}
+		}
+		return score;
+	}
 }
diff --git a/landlords-common/src/main/java/org/nico/ratel/landlords/robot/AbstractRobotDecisionMakers.java b/landlords-common/src/main/java/org/nico/ratel/landlords/robot/AbstractRobotDecisionMakers.java
new file mode 100644
index 0000000..5b695ed
--- /dev/null
+++ b/landlords-common/src/main/java/org/nico/ratel/landlords/robot/AbstractRobotDecisionMakers.java
@@ -0,0 +1,19 @@
+package org.nico.ratel.landlords.robot;
+
+import java.util.List;
+
+import org.nico.ratel.landlords.entity.Poker;
+import org.nico.ratel.landlords.entity.PokerSell;
+
+/** 
+ * 
+ * @author nico
+ * @version createTime：2018年11月15日 上午12:12:15
+ */
+
+public abstract	class AbstractRobotDecisionMakers {
+
+	public abstract List<Poker> howToPlayPokers(PokerSell lastPokerSell, List<Poker> myPokers);
+	
+	public abstract boolean howToChooseLandlord(List<Poker> leftPokers, List<Poker> rightPokers, List<Poker> myPokers);
+}
diff --git a/landlords-common/src/main/java/org/nico/ratel/landlords/robot/RobotDecisionMakers.java b/landlords-common/src/main/java/org/nico/ratel/landlords/robot/RobotDecisionMakers.java
index d0c3d0c..5f93a5b 100644
--- a/landlords-common/src/main/java/org/nico/ratel/landlords/robot/RobotDecisionMakers.java
+++ b/landlords-common/src/main/java/org/nico/ratel/landlords/robot/RobotDecisionMakers.java
@@ -12,16 +12,15 @@ import org.nico.ratel.landlords.entity.PokerSell;
  */
 public class RobotDecisionMakers {
 	
+	private static AbstractRobotDecisionMakers decisionMakers = new SimpleRobotDecisionMakers();
+	
 	public static List<Poker> howToPlayPokers(PokerSell lastPokerSell, List<Poker> myPokers){
 		
 		return null;
 	}
 	
 	public static boolean howToChooseLandlord(List<Poker> leftPokers, List<Poker> rightPokers, List<Poker> myPokers) {
-		
-		
-		
-		return true;
+		return decisionMakers.howToChooseLandlord(leftPokers, rightPokers, myPokers);
 	}
 	
 }
diff --git a/landlords-common/src/main/java/org/nico/ratel/landlords/robot/SimpleRobotDecisionMakers.java b/landlords-common/src/main/java/org/nico/ratel/landlords/robot/SimpleRobotDecisionMakers.java
new file mode 100644
index 0000000..6b9001b
--- /dev/null
+++ b/landlords-common/src/main/java/org/nico/ratel/landlords/robot/SimpleRobotDecisionMakers.java
@@ -0,0 +1,30 @@
+package org.nico.ratel.landlords.robot;
+
+import java.util.List;
+
+import org.nico.ratel.landlords.entity.Poker;
+import org.nico.ratel.landlords.entity.PokerSell;
+import org.nico.ratel.landlords.helper.PokerHelper;
+
+/** 
+ * 
+ * @author nico
+ * @version createTime：2018年11月15日 上午12:13:49
+ */
+
+public class SimpleRobotDecisionMakers extends AbstractRobotDecisionMakers{
+
+	@Override
+	public List<Poker> howToPlayPokers(PokerSell lastPokerSell, List<Poker> myPokers) {
+		return null;
+	}
+
+	@Override
+	public boolean howToChooseLandlord(List<Poker> leftPokers, List<Poker> rightPokers, List<Poker> myPokers) {
+		int leftScore = PokerHelper.parsePokerColligationScore(leftPokers);
+		int rightScore = PokerHelper.parsePokerColligationScore(rightPokers);
+		int myScore = PokerHelper.parsePokerColligationScore(myPokers);
+		return myScore >= (leftScore + rightScore)/2;
+	}
+
+}