public static boolean is_win() throws FileNotFoundException {
		if (ifWin == 0) {
			return false;
		} else if (win) {
			return true;
		}

		if ((FieldGame.unknown == 0 && ifWin == -1)
				|| (FieldGame.objects == ifWin)) {
			System.out.println("main: game is finish");
			Gui.writeStatus();
			win = true;
			return true;
		}
		return false;
	}