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# dungeon game can't move DOWN

I get error message when I try to move down:

```import random

CELLS = [(0,0),(0,1),(0,2),
(1,0),(1,1),(1,2),
(2,0),(2,1),(2,2)]

def get_locations():
monster = random.choice(CELLS)
door = random.choice(CELLS)
start = random.choice(CELLS)
if monster == door or monster == start or door == start:
return get_locations()
return monster, door, start

def move_player(player, move):
x,y = player
if move == 'LEFT':
y -=1
elif move =='RIGHT':
y +=1
elif move == 'UP':
x -=1
elif move == 'DOWN':
X +=1
return x,y

def get_moves(player):
moves = ['LEFT','RIGHT','UP','DOWN',]
if player[1] == 0:
moves.remove('LEFT')
if player[1] == 2:
moves.remove('RIGHT')
if player[0] == 0:
moves.remove('UP')
if player[0] == 2:
moves.remove('DOWN')
return moves

def draw_map(player):
print(' _ _ _')
tile = '|{}'
for idx, cell in enumerate(CELLS):
if idx in [0,1,3,4,6,7]:
if cell == player:
print(tile.format('x'),end='')
else:
print(tile.format('_'),end='')
else:
if cell == player:
print(tile.format('x|'))
else:
print(tile.format('_|'))

monster, door, player = get_locations()
print("Welcome to the dungeon!")

while True:
moves = get_moves(player)

print("You're currently in room {}".format(player))

draw_map(player)

print("You can move {}".format(moves))
print("Enter QUIT to quit")

move = input("> ")
move = move.upper()

if move == "QUIT":
break

if move in moves:
player = move_player(player,move)
else:
print("**Walls are hard, stop walking into them!**")
continue

if player == door:
print("**You escaped!**")
break
if player == monster:
print("**You were eaten by the grue!**")
break
```

down
Traceback (most recent call last):
File "dungeon_game.py", line 81, in <module>
player = move_player(player,move)
File "dungeon_game.py", line 28, in move_player
X +=1
UnboundLocalError: local variable 'X' referenced before assignment

any help would be appreciated :)