New method is added in JPanelChessBoard, so now when the black chess win

it shows W in chess board

OOP_group1A1_project/src/backend/Board.java

@@ -133,7 +133,11 @@ public class Board {
 	}
 	
 	public void userTouch(int x, int y) {
-	    // 1) Find if you clicked on a piece at (x,y)
+		if (isGameOver()) {
+	        endGame(); // <— this MUST be called
+	        return;
+	    }
+		// 1) Find if you clicked on a piece at (x,y)
 		if (isGameOver()) {
 	        System.out.println("Game Over!");
 	        return;
@@ -144,6 +148,10 @@ public class Board {
 	            clicked = p;
 	            break;
 	        }
+	        if (isGameOver()) {
+	            endGame(); // <— also check again after making a move
+	            return;
+	        }
 	    }
 
 	    // 2) If nothing is selected, select a piece of the correct color
@@ -203,6 +211,10 @@ public class Board {
 	    moveHistory.push(move);
 	    System.out.println(this);
 	    if (isGameOver()) return;
+	    if (isGameOver()) {
+	        endGame();
+	        return;
+	    }
 
 	}
 
@@ -434,9 +446,13 @@ public class Board {
 
 	
 	public void playMove(Move move) {
-		    if (isGameOver()) {
+		if (isGameOver()) {
-		        System.out.println("Game Over!");
+	        endGame(); // Make sure this is here
-		        return;
+	        return;
+	    }
+		if (isGameOver()) {
+			System.out.println("Game Over!");
+		    return;
 		    }
 		// Remove the piece from the destination (if a capture)
 	    Pieces.removeIf(p -> p.getX() == move.getToX() && p.getY() == move.getToY());
@@ -457,6 +473,10 @@ public class Board {
 
 	    // Clear selection
 	    hasSelection = false;
+	    if (isGameOver()) {
+	        endGame(); // check again after applying move
+	        return;
+	    }
 	}
 
 	Piece getPieceAt(int x, int y) {
@@ -483,7 +503,47 @@ public class Board {
 
 	    return !(whiteKingAlive && blackKingAlive);
 	}
+
+	
+	private void endGame() {
+	    boolean whiteAlive = false;
+	    boolean blackAlive = false;
+
+	    for (Piece p : Pieces) {
+	        if (p.getType() == PieceType.King) {
+	            if (p.isWhite()) whiteAlive = true;
+	            else blackAlive = true;
+	        }
+	    }
+
+	    Pieces.clear(); // Remove all remaining pieces
+	    hasSelection = false;
+
+	    if (whiteAlive && !blackAlive) {
+	        showWinText(true);  // White wins
+	    } else if (!whiteAlive && blackAlive) {
+	        showWinText(false); // Black wins
+	    }
+
+	    System.out.println("Game Over!");
+	}
+
+	private void showWinText(boolean isWhite) {
+	    // W
+	    Pieces.add(new Piece(1, 2, isWhite, PieceType.Queen));
+	    Pieces.add(new Piece(1, 3, isWhite, PieceType.Queen));
+	    Pieces.add(new Piece(2, 4, isWhite, PieceType.Queen));
+	    Pieces.add(new Piece(3, 2, isWhite, PieceType.Queen));
+	    Pieces.add(new Piece(3, 3, isWhite, PieceType.Queen));
+	    Pieces.add(new Piece(4, 4, isWhite, PieceType.Queen));
+	    Pieces.add(new Piece(5, 2, isWhite, PieceType.Queen));
+	    Pieces.add(new Piece(5, 3, isWhite, PieceType.Queen));
 	
 
 
+	 
+	}
+
+
+
 }

OOP_group1A1_project/src/windowInterface/JPanelChessBoard.java

@@ -192,5 +192,28 @@ public class JPanelChessBoard extends JPanel {
 	public boolean isPieceAdderMode() {
 		return pieceAdderMode;
 	}
+	
+	private void drawWinMessage(Graphics g, boolean isWhite) {
+	    PieceType type = PieceType.Queen;
+	    Color color = isWhite ? Color.white : Color.black;
+
+	    // Draw 'W'
+	    drawSinglePiece(g, 0, 2, type, isWhite);
+	    drawSinglePiece(g, 0, 3, type, isWhite);
+	    drawSinglePiece(g, 1, 4, type, isWhite);
+	    drawSinglePiece(g, 2, 3, type, isWhite);
+	    drawSinglePiece(g, 2, 2, type, isWhite);
+
+	    
+	}
+
+	private void drawSinglePiece(Graphics g, int boardX, int boardY, PieceType type, boolean isWhite) {
+	    g.drawImage(
+	        getChessPieceImageFromType(type, isWhite), 
+	        MARGIN + xCoordFromGame(boardX),
+	        MARGIN + yCoordFromGame(boardY),
+	        null
+	    );
+	}
 
 }