ipuz_barred_set_cell_bars (IPUZ_BARRED (puzzle_a), coord, IPUZ_STYLE_SIDES_TOP_LEFT | IPUZ_STYLE_SIDES_BOTTOM_RIGHT);
(IPUZ_STYLE_SIDES_TOP | IPUZ_STYLE_SIDES_LEFT | IPUZ_STYLE_SIDES_BOTTOM | IPUZ_STYLE_SIDES_RIGHT));
ipuz_barred_set_cell_bars (IPUZ_BARRED (puzzle_a), coord, IPUZ_STYLE_SIDES_LEFT | IPUZ_STYLE_SIDES_RIGHT);
g_assert (ipuz_crossword_get_symmetry (IPUZ_CROSSWORD (puzzle_a)) == IPUZ_SYMMETRY_ROTATIONAL_QUARTER);