diff --git a/Makefile b/Makefile
index 8d51913..d8071d0 100644
--- a/Makefile
+++ b/Makefile
@@ -6,11 +6,11 @@
 #    By: apommier <apommier@student.42.fr>          +#+  +:+       +#+         #
 #                                                 +#+#+#+#+#+   +#+            #
 #    Created: 2021/11/13 13:06:47 by apommier          #+#    #+#              #
-#    Updated: 2022/01/18 05:51:26 by apommier         ###   ########.fr        #
+#    Updated: 2022/01/19 03:50:25 by apommier         ###   ########.fr        #
 #                                                                              #
 # **************************************************************************** #
 
-NAME	= push_swap
+NAME	= push_swap checker
 SRCS	= Utils/push_swap.c \
 			Utils/process.c\
 			main.c\
@@ -24,6 +24,7 @@ SRCS	= Utils/push_swap.c \
 OBJS	= ${SRCS:.c=.o}
 BONUS_C	= checker_folder/main.c\
 			checker_folder/checker_utils.c\
+			checker_folder/checker_process.c\
 			Utils/push_swap.c \
 			Utils/process.c\
 			Utils/sorting.c\
@@ -44,15 +45,16 @@ ${NAME}:${OBJS}
 		gcc -g  ${OBJS} ${LIBFT}/libft.a
 		mv a.out push_swap
 
-bonus:${BONUS_C}
+bonus:${BONUS_O}
 		make bonus -C ${LIBFT}
-		gcc -g ${CFLAGS} ${LIBFT}/libft.a 
+		gcc -g ${CFLAGS} ${BONUS_O} ${LIBFT}/libft.a 
 		mv a.out checker
 
 all:	${NAME}
 
 clean:
 		${RM} ${OBJS}
+		${RM} ${BONUS_O}
 		make clean -C ${LIBFT}
 
 fclean:	clean
diff --git a/Utils/push_swap.h b/Utils/push_swap.h
index bb3111e..515d243 100644
--- a/Utils/push_swap.h
+++ b/Utils/push_swap.h
@@ -6,7 +6,7 @@
 /*   By: apommier <apommier@student.42.fr>          +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2021/11/25 23:15:17 by apommier          #+#    #+#             */
-/*   Updated: 2022/01/18 21:45:38 by apommier         ###   ########.fr       */
+/*   Updated: 2022/01/19 03:53:31 by apommier         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -47,6 +47,13 @@ t_list	*ft_pa(t_list **list_a, t_list **list_b, t_slist **process);
 void	ft_pb(t_list **list_a, t_list **list_b, t_slist **process);
 void	ft_rra_rrb(t_list **list, t_slist **process, char type);
 
+/*process fonction for checker*/
+int		sa_sb(t_list **list, t_slist **process, char type, int set);
+int		ra_rb(t_list **list, t_slist **process, char type);
+int		pa(t_list **list_a, t_list **list_b, t_slist **process);
+int		pb(t_list **list_a, t_list **list_b, t_slist **process);
+int		rra_rrb(t_list **list, t_slist **process, char type);
+
 /*sort fonction*/
 t_list	*best_b(t_list **b, t_list *start_b, t_list *a, int best_move);
 t_list	*swap(t_list *a, t_list **b, t_slist **action, t_list *to_swap);
@@ -77,8 +84,8 @@ int		ft_strcmp(const char *s1, t_slist *str);
 
 /*checker*/
 int		checker(t_slist *action, t_list **a);
-void	do_move(t_list **lst, t_list **lst_b, t_slist *a, t_slist *delete);
-void	do_move2(t_list **lst, t_list **lst_b, t_slist *a, t_slist **delete);
+int		do_move(t_list **lst, t_list **lst_b, t_slist *a, t_slist *delete);
+int		do_move2(t_list **lst, t_list **lst_b, t_slist *a, t_slist **delete);
 t_slist	*verify_list(t_slist *a);
 void	big_slstclear(t_slist **lst);
 
diff --git a/Utils/sort_little.c b/Utils/sort_little.c
index c525c05..87b3d51 100644
--- a/Utils/sort_little.c
+++ b/Utils/sort_little.c
@@ -6,7 +6,7 @@
 /*   By: apommier <apommier@student.42.fr>          +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2022/01/18 03:31:31 by apommier          #+#    #+#             */
-/*   Updated: 2022/01/18 21:59:23 by apommier         ###   ########.fr       */
+/*   Updated: 2022/01/19 03:32:05 by apommier         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -98,6 +98,8 @@ t_list	*sort5(t_list *list, t_slist **action, t_list *b)
 
 int	is_sorted(t_list *list)
 {
+	if (!list)
+		return (0);
 	while (list->next)
 	{
 		if (list->index > list->next->index)
diff --git a/checker_folder/a.out b/checker_folder/a.out
deleted file mode 100755
index b6824c0..0000000
Binary files a/checker_folder/a.out and /dev/null differ
diff --git a/checker_folder/checker_process.c b/checker_folder/checker_process.c
new file mode 100644
index 0000000..9c27cdd
--- /dev/null
+++ b/checker_folder/checker_process.c
@@ -0,0 +1,92 @@
+/* ************************************************************************** */
+/*																			*/
+/*														:::	  ::::::::   */
+/*   process.c										  :+:	  :+:	:+:   */
+/*													+:+ +:+		 +:+	 */
+/*   By: apommier <apommier@student.42.fr>		  +#+  +:+	   +#+		*/
+/*												+#+#+#+#+#+   +#+		   */
+/*   Created: 2022/01/17 11:52:37 by apommier		  #+#	#+#			 */
+/*   Updated: 2022/01/17 11:52:37 by apommier		 ###   ########.fr	   */
+/*																			*/
+/* ************************************************************************** */
+
+#include "../Utils/push_swap.h"
+
+int	sa_sb(t_list **list, t_slist **process, char type, int set)
+{
+	t_list	*swap;
+
+	if (!(*list) || !(*list)->next)
+		return (1);
+	swap = (*list)->next->next;
+	(*list)->next->next = *list;
+	*list = (*list)->next;
+	(*list)->next->next = swap;
+	if (set)
+	{
+		if (type == 'a')
+			s_lstadd_back(process, new_slist("sa"));
+		else if (type == 'b')
+			s_lstadd_back(process, new_slist("sb"));
+	}
+	return (1);
+}
+
+int	ra_rb(t_list **list, t_slist **process, char type)
+{
+	t_list	*swap;
+
+	if (!(*list) || !(*list)->next)
+		return (1);
+	swap = *list;
+	(ft_lstlast(*list))->next = *list;
+	*list = (*list)->next;
+	swap->next = 0;
+	if (type == 'a')
+		s_lstadd_back(process, new_slist("ra"));
+	else if (type == 'b')
+		s_lstadd_back(process, new_slist("rb"));
+	return (1);
+}
+
+int	pa(t_list **list_a, t_list **list_b, t_slist **process)
+{
+	t_list	*swap;
+
+	if (!(*list_b))
+		return (1);
+	swap = *list_b;
+	*list_b = (*list_b)->next;
+	ft_lstadd_front(list_a, swap);
+	s_lstadd_back(process, new_slist("pa"));
+	return (1);
+}
+
+int	pb(t_list **list_a, t_list **list_b, t_slist **process)
+{
+	t_list	*swap;
+
+	if (!(*list_a))
+		return (1);
+	swap = *list_a;
+	*list_a = (*list_a)->next;
+	ft_lstadd_front(list_b, swap);
+	s_lstadd_back(process, new_slist("pb"));
+	return (1);
+}
+
+int	rra_rrb(t_list **list, t_slist **process, char type)
+{
+	t_list	*swap;
+
+	if (!(*list) || !(*list)->next)
+		return (1);
+	swap = ft_lstlast(*list);
+	ft_lstbeforelast(*list)->next = 0;
+	ft_lstadd_front(list, swap);
+	if (type == 'a')
+		s_lstadd_back(process, new_slist("rra"));
+	else if (type == 'b')
+		s_lstadd_back(process, new_slist("rrb"));
+	return (1);
+}
diff --git a/checker_folder/checker_utils.c b/checker_folder/checker_utils.c
index da13f74..39a345e 100644
--- a/checker_folder/checker_utils.c
+++ b/checker_folder/checker_utils.c
@@ -6,24 +6,27 @@
 /*   By: apommier <apommier@student.42.fr>          +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2022/01/18 02:14:22 by apommier          #+#    #+#             */
-/*   Updated: 2022/01/18 06:49:36 by apommier         ###   ########.fr       */
+/*   Updated: 2022/01/19 03:42:58 by apommier         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "../Utils/push_swap.h"
 
-void	do_move2(t_list **lst, t_list **lst_b, t_slist *a, t_slist **delete)
+int	do_move2(t_list **lst, t_list **lst_b, t_slist *a, t_slist **delete)
 {
 	if (!ft_strcmp("rr\n", a))
 	{
-		if ((*lst)->next)
-			ft_ra_rb(lst, delete, 'a');
-		if ((*lst_b)->next)
-			ft_ra_rb(lst_b, delete, 'b');
+		if (!ra_rb(lst, delete, 'a'))
+			return (0);
+		if (!ra_rb(lst_b, delete, 'b'))
+			return (0);
 	}
 	if (!ft_strcmp("rrr\n", a))
 	{
-		ft_rra_rrb(lst, delete, 'a');
-		ft_rra_rrb(lst_b, delete, 'a');
+		if (!rra_rrb(lst, delete, 'a'))
+			return (0);
+		if (!rra_rrb(lst_b, delete, 'a'))
+			return (0);
 	}
+	return (1);
 }
diff --git a/checker_folder/main.c b/checker_folder/main.c
index 1d56785..cbc0dfe 100644
--- a/checker_folder/main.c
+++ b/checker_folder/main.c
@@ -6,7 +6,7 @@
 /*   By: apommier <apommier@student.42.fr>          +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2022/01/17 21:29:45 by apommier          #+#    #+#             */
-/*   Updated: 2022/01/18 06:49:49 by apommier         ###   ########.fr       */
+/*   Updated: 2022/01/19 03:44:06 by apommier         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -50,26 +50,26 @@ t_slist	*verify_list(t_slist *a)
 	return (start);
 }
 
-void	do_move(t_list **lst, t_list **lst_b, t_slist *a, t_slist *delete)
+int		do_move(t_list **lst, t_list **lst_b, t_slist *a, t_slist *delete)
 {
-	if (!ft_strcmp("pa\n", a))
-		ft_pa(lst, lst_b, &delete);
-	else if (!ft_strcmp("pb\n", a))
-		ft_pb(lst, lst_b, &delete);
-	else if (!ft_strcmp("sa\n", a))
-		ft_sa_sb(lst, &delete, 'a', 0);
-	else if (!ft_strcmp("sb\n", a))
-		ft_sa_sb(lst_b, &delete, 'b', 0);
-	else if (!ft_strcmp("ra\n", a))
-		ft_ra_rb(lst, &delete, 'a');
-	else if (!ft_strcmp("rb\n", a))
-		ft_ra_rb(lst_b, &delete, 'b');
-	else if (!ft_strcmp("rra\n", a))
-		ft_rra_rrb(lst, &delete, 'a');
-	else if (!ft_strcmp("rrb\n", a))
-		ft_rra_rrb(lst_b, &delete, 'b');
+	if (!ft_strcmp("pa\n", a) && !pa(lst, lst_b, &delete))
+		return (0);
+	else if (!ft_strcmp("pb\n", a) && !pb(lst, lst_b, &delete))
+		return (0);
+	else if (!ft_strcmp("sa\n", a) && !sa_sb(lst, &delete, 'a', 0))
+		return (0);
+	else if (!ft_strcmp("sb\n", a) && !sa_sb(lst, &delete, 'a', 0))
+		return (0);
+	else if (!ft_strcmp("ra\n", a) && !ra_rb(lst, &delete, 'a'))
+		return (0);
+	else if (!ft_strcmp("rb\n", a) && !ra_rb(lst_b, &delete, 'b'))
+		return (0);
+	else if (!ft_strcmp("rra\n", a) && !rra_rrb(lst, &delete, 'a'))
+		return (0);
+	else if (!ft_strcmp("rrb\n", a) && !rra_rrb(lst_b, &delete, 'b'))
+		return (0);
 	else
-		do_move2(lst, lst_b, a, &delete);
+		return (do_move2(lst, lst_b, a, &delete));
 	s_lstclear(&delete);
 }
 
diff --git a/checker_linux b/checker_linux
deleted file mode 100644
index 002d593..0000000
Binary files a/checker_linux and /dev/null differ