By removing one letter at a time and rearranging the remaining letters to form new English words in each step, reduce the word COUNTRYSIDE to the single letter I. Good luck!

C O U N T R Y S I D E
_ _ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _
_ _ _ _ _ _ _
_ _ _ _ _ _
_ _ _ _ _
_ _ _ _
_ _ _
_ _
I

Here is one SOLUTION.

ONE SOLUTION:

COUNTRYSIDE
INTRODUCES
NEUROTICS
CORNIEST
NOTICES
COSINE
NOISE
IONS
SIN
I
S
I

There are several alternate solutions. If you came up with one, feel free to post it in the comments below. Thanks!