Added loner and safe features

src/CheckersGameState3.java

@@ -292,7 +292,21 @@ public class CheckersGameState3 implements CheckersGameState{
      //System.out.println("" + mypieces);
      return mypieces/total;
    }
-
+
+   //features
+   public boolean isLoner(int pos){
+	   if(this.board[pos-5] == 0 && this.board[pos-4] ==0 && this.board[pos+4] ==0 && this.board[pos+5] ==0){
+		   return true;
+	   }
+	   return false;
+   }
+   public boolean isSafe(int pos){
+	   if(this.board[pos%9==4] || this.board[pos%9==3]){
+		   return true;
+	   }
+	   return false;
+   }
+
    public boolean isTerminal(){
        double rat = pieceRatio(this.player);
        return (rat == 0 || rat == 1);