private boolean validaTroca(int i, int j) {
		System.out.println(i + "  " + j);
		System.out.println(selected.getMyX() + "  " + selected.getMyY());
		if (i == selected.getMyX() + 1 && j == selected.getMyY())
			return true;
		else if (i == selected.getMyX() - 1 && j == selected.getMyY())
			return true;
		else if (j == selected.getMyY() + 1 && i == selected.getMyX())
			return true;
		else if (j == selected.getMyY() - 1 && i == selected.getMyX())
			return true;

		return false;
	}