I got the following status that can't be solved for the next step:

...T...T..
.T...T...T
...T...T..
.T...T...T
...T7..T..
.T0.6T...T
..1T5..T..
.T234T...T
...T...T.C
.T...T...T

When the head of the snake goto "C", it's body will occupy the left "." to "C", this makes the snake can't move anymore.