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
c5c4
b7b5
b7b6
d7b6
d7b8
d7f6
g7g5
g7g6
h7h5
h7h6
d8a5
d8b6
d8c7
d8h4
d8g5
d8f6
d8e7
e8e7
f8f3
f8f4
f8f5
f8f6
f8f7
g8h8
g8f7

## Board State Fen
3brrk1/1p1n2pp/p3p3/B1p1p3/4P3/5N2/1PP2PPP/R3R1K1 b - - 0 18
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
c5c4
b7b5
b7b6
d7b6
d7b8
d7f6
g7g5
g7g6
h7h5
h7h6
d8a5
d8b6
d8c7
d8h4
d8g5
d8f6
d8e7
e8e7
f8f3
f8f4
f8f5
f8f6
f8f7
g8h8
g8f7

## Board State Fen
3brrk1/1p1n2pp/p3p3/B1p1p3/4P3/5N2/1PP2PPP/R3R1K1 b - - 0 18
assistant
d8a5