diff --git a/OOP_2B1_Project/src/backend/Board.java b/OOP_2B1_Project/src/backend/Board.java
index 06ee583..5d33f03 100644
--- a/OOP_2B1_Project/src/backend/Board.java
+++ b/OOP_2B1_Project/src/backend/Board.java
@@ -4,16 +4,16 @@ import java.util.ArrayList;
 import java.util.LinkedList;
 
 public class Board {
-	public int width;
-	public int height;
-	public ArrayList<ArrayList<Piece>> board = new ArrayList<>();
-	public boolean select = false;
-	public int xm;
-	public int ym;
-	public int turnNumber;
-	public boolean turnColor;
-	public ArrayList<ArrayList<Boolean>> possibleMoves = new ArrayList<>();
-	public LinkedList<BoardHistory> boardHistory = new LinkedList<>();
+	private int width;
+	private int height;
+	private ArrayList<ArrayList<Piece>> board = new ArrayList<>();
+	private boolean select = false;
+	private int xm;
+	private int ym;
+	private int turnNumber;
+	private boolean turnColor;
+	private ArrayList<ArrayList<Boolean>> possibleMoves = new ArrayList<>();
+	private LinkedList<BoardHistory> boardHistory = new LinkedList<>();
 	
 	public Board(int colNum, int lineNum) {
 		this.width = colNum;
diff --git a/OOP_2B1_Project/src/backend/King.java b/OOP_2B1_Project/src/backend/King.java
index 698ff4e..79feabd 100644
--- a/OOP_2B1_Project/src/backend/King.java
+++ b/OOP_2B1_Project/src/backend/King.java
@@ -44,7 +44,15 @@ public class King extends Piece {
 				}
 			}
 		}
-
+		//kingside method
+		if (x+3 < 8) {
+			Piece Rook = board.get(y).get(x+3);
+			if (Rook != null && Rook.getType()== PieceType.Rook && !Rook.movePiece() && Rook.isWhite()== this.isWhite) {
+				if(board.get(y).get(x+1) == null && board.get(y).get(x+2) == null) {
+					moves.get(y).set(x+2,true);	
+				}
+			}
+		}		
 		return moves;
 	}
 }
\ No newline at end of file
diff --git a/OOP_2B1_Project/src/backend/Piece.java b/OOP_2B1_Project/src/backend/Piece.java
index cd63212..7dda487 100644
--- a/OOP_2B1_Project/src/backend/Piece.java
+++ b/OOP_2B1_Project/src/backend/Piece.java
@@ -36,5 +36,9 @@ public abstract class Piece {
 	public String toString() {
 		return "Piece [x=" + x + ", y=" + y + ", type=" + type + ", isWhite=" + isWhite + "]";
 	}
+	public boolean movePiece() {
+		boolean moved = false;
+		return moved;
+	}
 	
 }