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can someone explain this problem, I have been trying to picture this problem in my mind but I can not.

if you can answer step by step will be more than awesome. Thank you

movement.py
```# EXAMPLES:
# move((1, 1, 10), (-1, 0)) => (0, 1, 10)
# move((0, 1, 10), (-1, 0)) => (0, 1, 5)
# move((0, 9, 5), (0, 1)) => (0, 9, 0)

def move(player, direction):
x, y, hp = player
xx,yy =direction
if 9 > x > 0 == -1
x = x-1
if 0 >= x > 9
return x, y, hp
```

PLUS

I don't like to give away the answer, but to break it down:

```def move(player, direction):
# unpack the player and move
x, y, hp = player
mx, my = direction

# apply the move to the player
x = x + mx
y = y + my

# test if the player has gone outside the bounds, all four sides
# if so, set them at the bound and reduce the hit points
if x > 9:
x = 9
hp = hp - 5

if y > 9:
y = 9
hp = hp - 5

if x < 0:
x = 0
hp = hp - 5

if y < 0:
y = 0
hp = hp - 5

# Return the player
return x, y, hp
```

Thank you, it helps me a lot. I can see now the logic behind and the correlation between the place of the player and the movement.