diff --git a/display.c b/display.c
index eac78fc..fbdaca3 100644
--- a/display.c
+++ b/display.c
@@ -3,6 +3,7 @@
 
 void screenDisplay( unsigned short int **tab,int size)
 {
+    puts("0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 ");
     char element[7] ={' ','#','S','.','*','@','+'} ;
     for(int i=0;i<size;++i)
     {
diff --git a/function.c b/function.c
index 35aac33..b0d228d 100644
--- a/function.c
+++ b/function.c
@@ -82,7 +82,8 @@ canIGoDirection (short int valueOfNCase, short int valueOfNPlusOneCase)
   return 0;
 }
 
-void move (unsigned short int **tab, vect *playerPos, vect direction)
+void
+move (unsigned short int **tab, vect *playerPos, vect direction)
 {
   short int valueOfNCase
       = tab[playerPos->x + direction.x][playerPos->y + direction.y];
@@ -156,7 +157,9 @@ void move (unsigned short int **tab, vect *playerPos, vect direction)
     }
 }
 
-void inGameLoop (unsigned short int **tab2d, int N, vect *playerPos, vect *targets, int nbr_targets)
+void
+inGameLoop (unsigned short int **tab2d, int N, vect *playerPos, vect *targets,
+            int nbr_targets)
 {
   vect direction = { 0, 0 };
   char input;
@@ -197,29 +200,169 @@ void inGameLoop (unsigned short int **tab2d, int N, vect *playerPos, vect *targe
           direction.y = 0;
         }
 
-      system ("clear");
+      //system ("clear");
       move (tab2d, playerPos, direction);
 
       printf ("\n");
-      if (isWin(tab2d, targets, nbr_targets))
-      {
-        finish = true;
-      }
+      if (isWin (tab2d, targets, nbr_targets))
+        {
+          puts("Win!");
+          finish = true;
+        }
+      if (islose(tab2d, N))
+        {
+          puts("lose!");
+          finish = true;
+        }
       screenDisplay (tab2d, N);
     }
 }
 
-bool isWin(unsigned short int **tab2d, vect *targets, int nbr_targets)
+bool
+isWin (unsigned short int **tab2d, vect *targets, int nbr_targets)
 {
   int i;
   for (i = 0; i < nbr_targets; ++i)
-  {
-    int x = targets[i].x;
-    int y = targets[i].y;
-    if (tab2d[x][y] != BOX_ON_TARGET)
     {
-      return false;
+      int x = targets[i].x;
+      int y = targets[i].y;
+      if (tab2d[x][y] != BOX_ON_TARGET)
+        {
+          return false;
+        }
     }
-  }
   return true;
 }
+
+bool
+islose (unsigned short int **tab2d, const int N)
+{
+  int x = 0, y = 0;
+  for (x = 0; x < N; ++x)
+    {
+      for (y = 0; y < N; ++y)
+        {
+          bool isblock = false;
+          if (tab2d[x][y] == BOX)
+            {
+              vect box;
+              box.x = x;
+              box.y = y;
+              isblock = blockBox (tab2d, N, box);
+            }
+
+          if (isblock)
+            {
+              printf("%d %d", x, y);
+              return true;
+            }
+        }
+    }
+  return false;
+}
+
+vect
+plusVect (vect one, vect two)
+{
+  vect result;
+  result.x = one.x + two.x;
+  result.y = one.y + two.y;
+  return result;
+}
+
+int
+lengthVect (vect vector)
+{
+  return abs (vector.x) + abs (vector.y);
+}
+
+bool
+blockBox (unsigned short int **tab2d, const int N, vect box_coor)
+{
+  int nbr_touch = 0;
+  vect card[4] = { { 0, -1 }, { 1, 0 }, { 0, 1 }, { -1, 0 } };
+  int *indice_card = NULL;
+  int id_box = -1;
+  int i;
+  for (i = 0; i < 4; ++i)
+    {
+      vect test = plusVect (box_coor, card[i]);
+      unsigned short int val = tab2d[test.x][test.y];
+      if (val == BOX || val == WALL || val == BOX_ON_TARGET)
+        {
+          nbr_touch++;
+          if(val == BOX || val == BOX_ON_TARGET)
+          {
+            id_box = nbr_touch -1;
+          }
+          
+          indice_card = realloc (indice_card, sizeof (int) * nbr_touch);
+          indice_card[nbr_touch - 1] = i;
+          
+          printf("i = %d, (%d, %d)\n", i, test.x, test.y);
+        }
+    }
+  printf("nbr_touch = %d\n", nbr_touch);
+  if (nbr_touch == 0)
+    return false;
+
+  if (nbr_touch >= 3)
+  {
+    if(id_box != -1)
+    {
+      vect test = plusVect(card[indice_card[(id_box+1) %3]], card[indice_card[(id_box+2) %3]]);
+      if (test.x == 0 && test.y == 0) return false;
+    }
+    return true;
+  }
+
+
+  if (nbr_touch == 2)
+    {
+      
+      int id1 = indice_card[0];
+      int id2 = indice_card[1];
+      vect add = plusVect (card[id1], card[id2]);
+      if(lengthVect (add) == 2)
+      {
+        if (id_box == -1) return true;
+        vect test = plusVect(card[indice_card[id_box]], card[indice_card[(id_box+1) %2]]);
+        test = plusVect(test, box_coor);
+        printf("Vect test : %d %d\n", test.x, test.y);
+        if (tab2d[test.x][test.y] == WALL) return true;
+      }
+      return false;
+    }
+
+  vect normal = card[indice_card[0]];
+  vect director1 = card[(indice_card[0] + 1) % 4];
+  vect director2 = card[(indice_card[0] + 1) % 4];
+  vect dir_test[2] = { director1, director2 };
+
+  bool wall = false;
+  vect current = plusVect (box_coor, director1);
+
+  for (int i = 0; i < 2; ++i)
+    {
+      vect current = plusVect (box_coor, dir_test[i]);
+      while (!wall)
+        {
+          unsigned short int val = tab2d[current.x][current.y];
+          if (val == WALL) wall = true;
+          if (val == TARGET) return false;
+
+          vect cur_nor = plusVect (current, normal);
+          val = tab2d[cur_nor.x][cur_nor.y];
+          if (val != WALL || val != BOX || val != BOX_ON_TARGET)
+            {
+              puts("false");
+              return false;
+            }
+           
+        }
+        puts("fait");
+    }
+  return true;
+  perror("error in blockBox");
+  exit(0);
+}
diff --git a/function.h b/function.h
index eaec2ab..198f8fc 100644
--- a/function.h
+++ b/function.h
@@ -22,6 +22,8 @@ unsigned short int **creatArea2D(const unsigned int N);
 void screenDisplay( unsigned short int **tab,int size);
 void inGameLoop (unsigned short int **tab2d, int N, vect *playerPos, vect *targets, int nbr_targets);
 bool isWin(unsigned short int **tab2d, vect *targets, int nbr_targets);
+bool islose(unsigned short int ** tab2d,const int N);
+bool blockBox(unsigned short int **tab2d, const int N, vect box_coor);
 #endif // FONCTION_H
 
 
diff --git a/main.c b/main.c
index 2b3137b..3183ba6 100644
--- a/main.c
+++ b/main.c
@@ -13,6 +13,7 @@ int main()
   unsigned short int **tab2d = creatArea2D(SIZE_PLAY);
   targets = fileToTab2D("test.txt", tab2d, SIZE_PLAY, playerPos, &nbr_targets);
   screenDisplay(tab2d, SIZE_PLAY);
+  printf("player (%d, %d)", playerPos->x, playerPos->y);
   inGameLoop(tab2d, SIZE_PLAY, playerPos, targets, nbr_targets);
   free(playerPos);
   return 0;