Given the available moves based on the current board state in FEN notation, think carefully about which move would be best, then make that move. Be sure to note your color indicated in the FEN notation before deciding.
## Available Moves
c3a3
c3b3
c3c1
c3c2
c3h3
c3g3
c3f3
c3e3
c3d3
c3c5
c3c4
f4e2
f4e6
f4g2
f4d3
f4d5
f4h3
f4h5
b5b4
a6a5
g6g5
h7h5
h7h6
g8h8
g8f8

## Board State Fen
6k1/4R2p/p1p3p1/1pP5/4NnP1/P1r4P/3K4/8 b - - 5 40
system
You are a chess playing AI.
user
Given the available moves based on the current board state in FEN notation, think carefully about which move would be best, then make that move. Be sure to note your color indicated in the FEN notation before deciding.
## Available Moves
c3a3
c3b3
c3c1
c3c2
c3h3
c3g3
c3f3
c3e3
c3d3
c3c5
c3c4
f4e2
f4e6
f4g2
f4d3
f4d5
f4h3
f4h5
b5b4
a6a5
g6g5
h7h5
h7h6
g8h8
g8f8

## Board State Fen
6k1/4R2p/p1p3p1/1pP5/4NnP1/P1r4P/3K4/8 b - - 5 40
assistant
f4d5