Saving system done

src/backend/Board.java

@@ -196,10 +196,22 @@ public class Board {
 	/* saving-loading feature :*/
 
 	public String[] toFileRep() {
-		//TODO
-		return null;
+	    ArrayList<String> lines = new ArrayList<>();
+
+	    for (int y = 0; y < 8; y++) {
+	        for (int x = 0; x < 8; x++) {
+	            Piece piece = cells[x][y];
+	            if (piece != null) {
+	                String line = piece.isWhite() + " " + piece.getType() + " " + x + " " + y;
+	                lines.add(line);
+	            }
+	        }
+	    }
+
+	    return lines.toArray(new String[0]);
 	}
 
+
 	public Board(String[] array) {
 		//TODO