diff --git a/src/map/map_checker.c b/src/map/map_checker.c
index dcdc477..648d94e 100644
--- a/src/map/map_checker.c
+++ b/src/map/map_checker.c
@@ -6,7 +6,7 @@
 /*   By: tchampio <tchampio@student.42lehavre.      +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/06/06 17:54:42 by tchampio          #+#    #+#             */
-/*   Updated: 2025/06/20 15:23:32 by tchampio         ###   ########.fr       */
+/*   Updated: 2025/06/20 15:40:20 by tchampio         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -206,6 +206,23 @@ void	populate_maps(t_mapdata *map, int fd)
 	free(line);
 }
 
+bool	has_forbidden_characters(char *line)
+{
+	static const char	*allowedchars = "10NSEW";
+	size_t				strsize;
+	int					i;
+
+	strsize = ft_strlen(line);
+	i = 0;
+	while (i < strsize)
+	{
+		if (!ft_strchr(allowedchars, line[i]))
+			return (true);
+		i++;
+	}
+	return (false);
+}
+
 bool	check_walls(t_mapdata *map)
 {
 	int		i;
@@ -228,11 +245,25 @@ bool	check_walls(t_mapdata *map)
 			if (ft_strlen(map->map[i]) != (unsigned int)j)
 				return (false);
 		}
+		if (has_forbidden_characters(map->map[i]))
+			return (true);
 		i++;
 	}
 	return (true);
 }
 
+bool	check_bare_minimum(char **map)
+{
+	int	i;
+
+	i = 0;
+}
+
+bool	flood_fill(char **mapflood)
+{
+	return (false);
+}
+
 void print_map(char **map)
 {
 	int		i;
@@ -264,8 +295,10 @@ bool	check_cubfile(char *file, t_mapdata *map)
 	if (!check_walls(map))
 		return (close(fd), ft_strlcpy(map->error,
 				"Map is malformed (invalid chars or missing walls)", 51), false);
-	//if (!flood_fill(map->mapflood))
-	//	return (close(fd), ft_strlcpy(map->error,
-	//			"Map is not possible (flood fill failed)", 41), false);
+	if (!check_bare_minimum(map->map))
+		return (close(fd), false);
+	if (!flood_fill(map->mapflood))
+		return (close(fd), ft_strlcpy(map->error,
+				"Map is not possible (flood fill failed)", 41), false);
 	return (true);
 }