diff --git a/game_examples.c b/game_examples.c
index febe04e..abe734c 100644
--- a/game_examples.c
+++ b/game_examples.c
@@ -212,7 +212,7 @@ square sol_5x3w_squares[] = {
 /*                               GAME SAVE (V3)                               */
 /* ************************************************************************** */
 
-char game_default_str[] = {
+char default_str[] = {
     '7', ' ', '7', ' ', '0', '\n',             // <nb_rows> <nb_cols> <wrapping>\n
     'b', 'b', '1', 'b', 'b', 'b',  'b', '\n',  // <squares[0][0]><squares[0][1]>...<squares[0][nb_cols-1]>\n
     'b', 'b', '2', 'b', 'b', 'b',  'b', '\n',  // <squares[1][0]><squares[1][1]>...<squares[1][nb_cols-1]>\n
@@ -222,4 +222,24 @@ char game_default_str[] = {
     'b', 'b', 'b', 'b', '2', 'b',  'b', '\n',  // <squares[5][0]><squares[5][1]>...<squares[5][nb_cols-1]>\n
     'b', 'b', 'b', 'b', 'w', 'b',  'b', '\n'   // <squares[6][0]><squares[6][1]>...<squares[6][nb_cols-1]>\n
 };
+
+char ext_5x3w_str[] = {
+    '5', ' ', '3', ' ',  '1', '\n',  // <nb_rows> <nb_cols> <wrapping>\n
+    'b', 'b', 'b', '\n',             // <squares[0][0]><squares[0][1]>...<squares[0][nb_cols-1]>\n
+    'w', 'b', '1', '\n',             // <squares[1][0]><squares[1][1]>...<squares[1][nb_cols-1]>\n
+    'b', '2', 'b', '\n',             // <squares[2][0]><squares[2][1]>...<squares[2][nb_cols-1]>\n
+    'b', 'b', 'b', '\n',             // <squares[3][0]><squares[3][1]>...<squares[3][nb_cols-1]>\n
+    'b', 'b', 'b', '\n'              // <squares[4][0]><squares[4][1]>...<squares[4][nb_cols-1]>\n
+};
+
+char other_str[] = {
+    '7', ' ', '7', ' ', '0', '\n',             // <nb_rows> <nb_cols> <wrapping>\n
+    '*', 'b', '1', 'b', 'b', 'b',  'b', '\n',  // <squares[0][0]><squares[0][1]>...<squares[0][nb_cols-1]>\n
+    'b', 'b', '2', 'b', 'b', 'b',  'b', '\n',  // <squares[1][0]><squares[1][1]>...<squares[1][nb_cols-1]>\n
+    'b', 'b', 'b', 'b', 'b', 'w',  '2', '\n',  // <squares[2][0]><squares[2][1]>...<squares[2][nb_cols-1]>\n
+    '*', 'b', 'b', 'b', 'b', 'b',  'b', '\n',  // <squares[3][0]><squares[3][1]>...<squares[3][nb_cols-1]>\n
+    '1', 'w', 'b', 'b', 'b', 'b',  'b', '\n',  // <squares[4][0]><squares[4][1]>...<squares[4][nb_cols-1]>\n
+    'b', 'b', 'b', 'b', '2', 'b',  'b', '\n',  // <squares[5][0]><squares[5][1]>...<squares[5][nb_cols-1]>\n
+    'b', 'b', 'b', 'b', 'w', 'b',  '-', '\n'   // <squares[6][0]><squares[6][1]>...<squares[6][nb_cols-1]>\n
+};
 /* ************************************************************************** */
\ No newline at end of file
diff --git a/game_examples.h b/game_examples.h
index 89ccf51..52d792c 100644
--- a/game_examples.h
+++ b/game_examples.h
@@ -32,6 +32,8 @@ extern square ext_2x2w_squares[];
 extern square sol_2x2w_squares[];
 
 // V3
-extern char game_default_str[];
+extern char default_str[];
+extern char ext_5x3w_str[];
+extern char other_str[];
 
 #endif  // __GAME_EXAMPLES_H__
diff --git a/game_test.c b/game_test.c
index af17cb2..1cc9f11 100644
--- a/game_test.c
+++ b/game_test.c
@@ -21,10 +21,11 @@
 
 #define USABLE_SQUARE 2
 
-#define NB_CHAR_SAVED_FILE_INFO 6
+#define NB_CHAR_SAVED_FILE_FIRST_LINE 6  // <nb_rows>' '<nb_cols>' '<wrapping>'\n'
 
 /* ********** game_get_black_number ********** */
 bool test_game_get_black_number(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -54,6 +55,7 @@ bool test_game_get_black_number(bool whoami, char** name) {
 
 /* ********** game_is_black ********** */
 bool test_game_is_black(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -86,6 +88,7 @@ bool test_game_is_black(bool whoami, char** name) {
 
 /* ********** game_is_lightbulb ********** */
 bool test_game_is_lightbulb(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -115,6 +118,7 @@ bool test_game_is_lightbulb(bool whoami, char** name) {
 
 /* ********** game_is_blank ********** */
 bool test_game_is_blank(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -144,6 +148,7 @@ bool test_game_is_blank(bool whoami, char** name) {
 
 /* ********** game_delete ********** */
 bool test_game_delete(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -157,6 +162,7 @@ bool test_game_delete(bool whoami, char** name) {
 /* ********** game_equal ********** */
 
 bool test_equal_ext(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -193,6 +199,7 @@ bool test_equal_ext(bool whoami, char** name) {
 }
 
 bool test_equal(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -222,6 +229,7 @@ bool test_equal(bool whoami, char** name) {
 
 /* ********** game_new_empty ********** */
 bool test_game_new_empty(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -242,6 +250,7 @@ bool test_game_new_empty(bool whoami, char** name) {
 
 /* ********** game_copy ********** */
 bool test_game_copy(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -275,6 +284,7 @@ bool test_game_copy(bool whoami, char** name) {
 
 /* ********** game_undo ********** */
 bool test_game_undo(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -308,6 +318,7 @@ bool test_game_undo(bool whoami, char** name) {
 
 /* ********** game_redo ********** */
 bool test_game_redo(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -347,6 +358,7 @@ bool test_game_redo(bool whoami, char** name) {
  * @return true if every game has been created well
  */
 bool test_game_new_empty_ext(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -371,6 +383,7 @@ bool test_game_new_empty_ext(bool whoami, char** name) {
  * @return true if every game has been created well and well filled
  */
 bool test_game_new_ext(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -409,6 +422,7 @@ bool test_game_new_ext(bool whoami, char** name) {
  * @return true if there is no errors
  */
 bool test_game_is_over(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -436,6 +450,7 @@ bool test_game_is_over(bool whoami, char** name) {
  * @return true if there is no error
  */
 bool test_game_restart(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -476,6 +491,7 @@ bool test_game_restart(bool whoami, char** name) {
  * @return true if there is no error
  */
 bool test_game_new(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -508,6 +524,7 @@ bool test_game_new(bool whoami, char** name) {
  * @return true if there is no error
  */
 bool test_game_print(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -539,6 +556,7 @@ bool test_game_print(bool whoami, char** name) {
  * @return true if there is no error
  */
 bool test_game_get_square(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -569,6 +587,7 @@ bool test_game_get_square(bool whoami, char** name) {
  * @return true if there is no error
  */
 bool test_game_default(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -602,6 +621,7 @@ bool test_game_default(bool whoami, char** name) {
  * @return true if there is no error
  */
 bool test_game_default_solution(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -684,6 +704,7 @@ On the 2x2, 3x3 and 5x3 tests, we play these move to win and we test if the grid
                                    (5x3)
 */
 bool test_game_update_flags(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -774,6 +795,7 @@ bool test_game_update_flags(bool whoami, char** name) {
  * @return true if there is no error
  */
 bool test_game_play_move(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -805,6 +827,7 @@ bool test_game_play_move(bool whoami, char** name) {
  * @return true if there is no error
  */
 bool test_game_check_move(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -836,6 +859,7 @@ bool test_game_check_move(bool whoami, char** name) {
 
 /* ************** game_set_square ************** */
 bool test_game_set_square(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -862,6 +886,7 @@ bool test_game_set_square(bool whoami, char** name) {
 
 /* ************** game_get_state ************** */
 bool test_game_get_state(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -888,6 +913,7 @@ bool test_game_get_state(bool whoami, char** name) {
 
 /* ************** game_get_flags ************** */
 bool test_game_get_flags(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -911,6 +937,7 @@ bool test_game_get_flags(bool whoami, char** name) {
 
 /* ************** game_is_marked ************** */
 bool test_game_is_marked(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -934,6 +961,7 @@ bool test_game_is_marked(bool whoami, char** name) {
 
 /* ************** game_is_lighted ************** */
 bool test_game_is_lighted(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -957,6 +985,7 @@ bool test_game_is_lighted(bool whoami, char** name) {
 
 /* ************** game_has_error ************** */
 bool test_game_has_error(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -980,6 +1009,7 @@ bool test_game_has_error(bool whoami, char** name) {
 
 /* ************** game_nb_rows ************** */
 bool test_game_nb_rows(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -995,6 +1025,7 @@ bool test_game_nb_rows(bool whoami, char** name) {
 
 /* ************** game_nb_cols ************** */
 bool test_game_nb_cols(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -1010,6 +1041,7 @@ bool test_game_nb_cols(bool whoami, char** name) {
 
 /* ************** game_is_wrapping ************** */
 bool test_game_is_wrapping(bool whoami, char** name) {
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
@@ -1034,21 +1066,51 @@ bool test_game_is_wrapping(bool whoami, char** name) {
 
 /* ***** game_save ***** */
 bool test_game_save(bool whoami, char** name) {
-	// if whoami is true return in name the name of the function
+	// if whoami is true return in name (second parms) the name of the function
 	if (whoami) {
 		*name = (char*)__func__;
 		return false;
 	}
 	game gdefault = game_default();
 	game_save(gdefault, "gdefault.txt");
+	// try to open the created save file
 	FILE* f_gdefault = fopen("gdefault.txt", "r");
 	assert(f_gdefault);
-	char char_to_test = '?';
-	for (uint index_gdefault_str = 0; index_gdefault_str < game_nb_cols(gdefault) * game_nb_rows(gdefault) + NB_CHAR_SAVED_FILE_INFO + game_nb_rows(gdefault);
-	     index_gdefault_str++) {
-		char_to_test = fgetc(f_gdefault);
-		assert(char_to_test == game_default_str[index_gdefault_str]);
+	// explore default_str and test if each char of the saved file == char of default_str
+	for (uint index_default_str = 0;
+	     index_default_str < game_nb_cols(gdefault) * game_nb_rows(gdefault) + NB_CHAR_SAVED_FILE_FIRST_LINE + game_nb_rows(gdefault); index_default_str++) {
+		int char_to_test = fgetc(f_gdefault);
+		assert(char_to_test != -1);
+		assert((char)char_to_test == default_str[index_default_str]);
 	}
+	game_delete(gdefault);
+	fclose(f_gdefault);
+	// do the same as gdefault but with ext_5x3w_squares
+	game g5x3w = game_new_ext(5, 3, ext_5x3w_squares, true);
+	game_save(g5x3w, "g5x3w.txt");
+	FILE* file_g5x3w = fopen("g5x3w.txt", "r");
+	assert(file_g5x3w);
+	for (uint index_ext_5x3w_str = 0; index_ext_5x3w_str < game_nb_cols(g5x3w) * game_nb_rows(g5x3w) + NB_CHAR_SAVED_FILE_FIRST_LINE + game_nb_rows(g5x3w);
+	     index_ext_5x3w_str++) {
+		int char_to_test = fgetc(file_g5x3w);
+		assert(char_to_test != -1);
+		assert((char)char_to_test == ext_5x3w_str[index_ext_5x3w_str]);
+	}
+	game_delete(g5x3w);
+	fclose(file_g5x3w);
+	// do the same as gdefault but with other_squares
+	game gother = game_new(other_squares);
+	game_save(gother, "gother.txt");
+	FILE* file_gother = fopen("gother.txt", "r");
+	assert(file_gother);
+	for (uint index_other_str = 0; index_other_str < game_nb_cols(gother) * game_nb_rows(gother) + NB_CHAR_SAVED_FILE_FIRST_LINE + game_nb_rows(gother);
+	     index_other_str++) {
+		int char_to_test = fgetc(file_gother);
+		assert(char_to_test != -1);
+		assert((char)char_to_test == other_str[index_other_str]);
+	}
+	game_delete(gother);
+	fclose(file_gother);
 	return true;
 }