diff --git a/du4/snake.c b/du4/snake.c
index 9d81e9c..d9045a6 100644
--- a/du4/snake.c
+++ b/du4/snake.c
@@ -2,62 +2,73 @@
 #include <stdlib.h>
 
 struct snake* add_snake(struct snake* snake, int x, int y) {
-    struct snake* nova_cast = calloc(1, sizeof(struct snake));
-    nova_cast->x = x;
-    nova_cast->y = y;
-    nova_cast->next = snake;
-    return nova_cast;
+
+    struct snake* novy_uzol = calloc(1, sizeof(struct snake));
+
+    novy_uzol->x = x;
+    novy_uzol->y = y;
+    novy_uzol->next = snake;
+    return novy_uzol;
 }
 
 struct snake* remove_snake(struct snake* hlava) {
+
     if (hlava == NULL) return NULL;
     if (hlava->next == NULL) {
         free(hlava);
         return NULL;
     }
+
     hlava->next = remove_snake(hlava->next);
     return hlava;
 }
 
 int is_snake(struct snake* snake, int x, int y) {
-    for (struct snake* this = snake; this != NULL; this = this->next) {
-        if (this->x == x && this->y == y) return 1;
+
+    for (struct snake* clanok = snake; clanok != NULL; clanok = clanok->next) {
+        if (clanok->x == x && clanok->y == y) return 1;
     }
+
     return 0;
 }
 
 void free_snake(struct snake* sn) {
+
     if (sn == NULL) return;
     free_snake(sn->next);
     free(sn);
 }
 
 int step_state(struct state* st) {
-    int nova_x = st->snake->x + st->sx;
-    int nova_y = st->snake->y + st->sy;
 
-    if (nova_x < 0 || nova_x >= st->width || nova_y < 0 || nova_y >= st->height)
+    int next_x = st->snake->x + st->sx;
+    int next_y = st->snake->y + st->sy;
+
+    if (next_x < 0 || next_x >= st->width || next_y < 0 || next_y >= st->height)
         return END_WALL;
 
-    if (is_snake(st->snake, nova_x, nova_y))
+    if (is_snake(st->snake, next_x, next_y))
         return END_SNAKE;
 
     for (int i = 0; i < FOOD_COUNT; i++) {
-        if (st->foodx[i] == nova_x && st->foody[i] == nova_y) {
+
+        if (st->foodx[i] == next_x && st->foody[i] == next_y) {
+
             st->foodx[i] = -1;
             st->foody[i] = -1;
-            st->snake = add_snake(st->snake, nova_x, nova_y);
+            st->snake = add_snake(st->snake, next_x, next_y);
 
-            int zostatok = 0;
+            int zostava_jedlo = 0;
             for (int j = 0; j < FOOD_COUNT; j++) {
-                if (st->foodx[j] >= 0) zostatok = 1;
+                if (st->foodx[j] >= 0) zostava_jedlo = 1;
             }
-            if (!zostatok) return END_FOOD;
+            
+            if (!zostava_jedlo) return END_FOOD;
             return END_CONTINUE;
         }
     }
 
-    st->snake = add_snake(st->snake, nova_x, nova_y);
+    st->snake = add_snake(st->snake, next_x, next_y);
     st->snake = remove_snake(st->snake);
     return END_CONTINUE;
 }