deleted useless attributes + add new comments

src/backend/Board.java

@@ -3,7 +3,6 @@ package backend;
 import java.util.ArrayList;
 
 public class Board {
-	private String boardString; // Represent the board's state as a string
 	private int line;
 	private int col;
 	private Piece[][] board; // 2D array to hold pieces
@@ -123,7 +122,6 @@ public class Board {
 	}
 
 	public void userTouch(int x, int y) {
-		//TODO
 		// Case 1: No position is selected
 		  if (selectedPosition==null) { 
 			  Piece clickedPiece = board[y][x];
@@ -159,6 +157,8 @@ public class Board {
 	 }
 	
 	public void movePiece(int fromX, int fromY, int toX, int toY) {
+		// Additional method: moves a piece from one position to another on the board
+		
 		// Get the piece at the source position
 	    Piece piece = board[fromY][fromX];
 	    

src/backend/Piece.java

@@ -22,6 +22,7 @@ public class Piece {
 		return color;
 	}
 	
+	// Additional methods: updates the x or y coordinates of the piece's position on the board
 	public void setX(int x) {
 		this.X=x;
 	}