diff --git a/tractor.py b/tractor.py
deleted file mode 100644
index 3b6b1bf..0000000
--- a/tractor.py
+++ /dev/null
@@ -1,60 +0,0 @@
-import pygame
-
-from pygame.locals import (
-    K_UP,
-    K_DOWN,
-    K_LEFT,
-    K_RIGHT,
-    K_ESCAPE,
-    K_SPACE,
-    K_c,
-    KEYDOWN,
-    QUIT
-)
-
-from dimensions import *
-from colors import *
-
-class Tractor(pygame.sprite.Sprite):
-    def __init__(self, field):
-        super(Tractor, self).__init__()
-        self.surf = pygame.Surface((WIDTH, HEIGHT))
-        self.surf.fill(RED)
-        self.position = field.position
-        self.rect = self.surf.get_rect(
-            topleft=((MARGIN + WIDTH) * self.position[0] + MARGIN, (MARGIN + HEIGHT) * self.position[1] + MARGIN))
-        self.field = field
-        
-    def update(self, pressed_keys):
-        if pressed_keys[K_UP]:
-            self.rect.move_ip(0, -(HEIGHT + MARGIN))
-            self.position[1] -= 1
-            if self.rect.top <= MARGIN:
-                self.rect.top = MARGIN
-                self.position[1] = 0
-        if pressed_keys[K_DOWN]:
-            self.rect.move_ip(0, HEIGHT + MARGIN)
-            self.position[1] += 1
-            if self.rect.bottom >= SCREEN_HEIGHT-MARGIN:
-                self.rect.bottom = SCREEN_HEIGHT-MARGIN
-                self.position[1] = GSIZE-1
-        if pressed_keys[K_LEFT]:
-            self.rect.move_ip(-(WIDTH + MARGIN), 0)
-            self.position[0] -= 1
-            if self.rect.left < MARGIN:
-                self.rect.left = MARGIN
-                self.position[0] = 0
-        if pressed_keys[K_RIGHT]:
-            self.rect.move_ip(WIDTH + MARGIN, 0)
-            self.position[0] += 1
-            if self.rect.right > SCREEN_WIDTH-MARGIN:
-                self.rect.right = SCREEN_WIDTH-MARGIN
-                self.position[0] = GSIZE-1
-
-    def hydrate(self, field, pressed_keys):
-        if pressed_keys[K_SPACE]:
-            field[self.position[0]][self.position[1]].hydrate()
-
-    def cut(self, field, pressed_keys):
-        if pressed_keys[K_c]:
-            field[self.position[0]][self.position[1]].free()