private void showBoard(boolean activate) { 
		for (int row = 0; row < 8; row++)
            for (int column = 0; column < 8; column++){
            	Position position = new Position(row,column);
            
                    if (board.isEmpty(position))
                    	add(new EmptyTile((row+column)%2==0 ? Board.BLACK : Board.WHITE));
                    
                    else if(board.isMarker(position))
                    	addMarker(new MarkerTile(board.getMarker(position).getRelatedPlay()));
                    
                    else 
                    	addPiece(new BusyTile( board.getPiece(position)),position,activate);            
           }
	}