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
c5d4
c5c4
b6b5
e6e5
h6h5
a7a5
a7a6
b7a6
b7e4
b7d5
b7c6
b7c8
d7e5
d7b8
d7f6
e7d6
e7d8
e7h4
e7g5
e7f6
e7e8
f7f5
f7f6
g7g5
g7g6
a8e8
a8d8
a8c8
a8b8
f8b8
f8c8
f8d8
f8e8
f8g8
h8g8

## Board State Fen
r4r1k/pb1nqpp1/1p2p2p/2p5/3PB3/2R1PN2/PPQ2PPP/5RK1 b - - 3 17
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
c5d4
c5c4
b6b5
e6e5
h6h5
a7a5
a7a6
b7a6
b7e4
b7d5
b7c6
b7c8
d7e5
d7b8
d7f6
e7d6
e7d8
e7h4
e7g5
e7f6
e7e8
f7f5
f7f6
g7g5
g7g6
a8e8
a8d8
a8c8
a8b8
f8b8
f8c8
f8d8
f8e8
f8g8
h8g8

## Board State Fen
r4r1k/pb1nqpp1/1p2p2p/2p5/3PB3/2R1PN2/PPQ2PPP/5RK1 b - - 3 17
assistant
b7e4