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# I've been building upon the dungeon game these past few days, and i've hit a roadblock. Any ideas?

```import os
import random

#Display Monster
#Let the monster move too

CELLS = [(0, 0), (1, 0), (2, 0), (3, 0), (4, 0),
(0, 1), (1, 1), (2, 1), (3, 1), (4, 1),
(0, 2), (1, 2), (2, 2), (3, 2), (4, 2),
(0, 3), (1, 3), (2, 3), (3, 3), (4, 3),
(0, 4), (1, 4), (2, 4), (3, 4), (4, 4)]

MONSTER_MOVE = (1,2,3,4,5,6,7,8)

def clear_screen():
os.system('cls' if os.name == 'nt' else 'clear')

def get_locations():                    # pick random location for player
return random.sample(CELLS, 3)      # pick random location for the monster
# pick random location for exit door

def move_player(player, move):          # move player
x, y = player
if move == "W":
x -= 1
if move == "E":
x += 1
if move == "N":
y -= 1
if move == "S":
y += 1
if move == "NW":                    #Allow diagonal movement
x -= 1
y -= 1
if move == "NE":
x += 1
y -= 1
if move == "SW":
x -= 1
y += 1
if move == "SE":
x += 1
y += 1
return x, y

def get_moves(player):
moves = ["W", "E", "N", "S", "NW", "NE", "SW", "SE"]         # take input for movement
x, y = player
if x == 4 and y == 4:
moves.remove("S")
moves.remove("SE")
moves.remove("SW")
moves.remove("E")
moves.remove("NE")
if x == 4 and y == 0:
moves.remove("N")
moves.remove("NW")
moves.remove("NE")
moves.remove("E")
moves.remove("SE")
if x == 0 and y == 4:
moves.remove("W")
moves.remove("NW")
moves.remove("S")
moves.remove("SW")
moves.remove("SE")
if x == 0 and y == 0:
moves.remove("W")
moves.remove("NW")
moves.remove("NE")
moves.remove("N")
moves.remove("SW")
if x == 0:                                                   # invalid moves (past edges of grid)
moves.remove("W")
moves.remove("NW")
moves.remove("SW")
if x == 4:
moves.remove("NE")
moves.remove("SE")
moves.remove("E")
if y == 0:
moves.remove("NW")
moves.remove("NE")
moves.remove("N")
if y == 4:
moves.remove("S")
moves.remove("SE")
moves.remove("SW")
return moves

#def monster_wander(monster):

def draw_map(player):           # draw grid

print(" _"*5)
tile = "|{}"

for cell in CELLS:
x, y = cell
if x < 4:
line_end = ""
if cell == player:              # draw player in the grid
output = tile.format("X")
else:
output = tile.format("_")
else:
line_end = "\n"
if cell == player:
output = tile.format("X|")
else:
output = tile.format("_|")
print(output, end=line_end)

def game_loop():
monster, door, player = get_locations()
playing = True

while playing:
clear_screen()                       # clear screen and redraw grid
draw_map(player)
valid_moves = get_moves(player)

print("You're currently in room {}".format(player))
print("You can move {}".format(", ".join(valid_moves)))
print("Enter QUIT to quit")

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

if move == 'QUIT':
print("\n ** See you next time! **\n")
break
if move in valid_moves:
player = move_player(player, move)

if player == monster:                                                       # check for win/loss
print("\n ** Oh no! The monster got you! Better luck next time! **\n")
playing = False
if player == door:
print("\n ** You escaped! Congratulations! **\n")
playing = False
else:
input("\n ** Walls are hard! Don't run into them! **\n")
else:
if input("Play again? [Y/N] ").lower() != "n":
game_loop()

clear_screen()
print("Welcome to the dungeon!")
clear_screen()
game_loop()
```

specifically, i get the error "ValueError: list.remove(x): x not in list" but ONLY when i try to move the player into the corners. any ideas what i'm doing wrong?

My code isn't quite the same as Kenneth's code in which I have a twenty by 5 board but it should still allow you to move sideways on a smaller board.

```def move_player(player, move):
x,y = player
if move == "A":
x -= 1

if move == "D":
x += 1

if move == "W":
y -= 1

if move == "S":
y += 1

if move == "WA":
x -= 1
y -= 1

if move == "WD":
x += 1
y -= 1

if move == "SA":
y += 1
x -= 1

if move == "SD":
y += 1
x += 1

return x, y

def get_moves(player):

moves = ["A", "D", "W", "S", "WD", "WA", "SD", "SA"]

x,y = player
if x == 0:
moves.remove("A")
moves.remove("WA")
moves.remove("SA")

if x == 5:
moves.remove("D")
moves.remove("WD")
moves.remove("SD")

if y == 0:
moves.remove("W")
moves.remove("WD")
moves.remove("WA")

if y == 18:
moves.remove("S")
moves.remove("SD")
moves.remove("SA")

return moves
```

Hope this helps and happy coding Jason Smith. :)

your code didn't solve my problem, but it did guide me to the right answer! Thanks for your time, happy coding!