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
f4g5
f4f5
a6b4
a6b8
a6c5
a6c7
g7g5
g7g6
h7h5
h7h6

## Board State Fen
4B3/6pp/np2p3/1P2P3/3K1k2/5P2/6PP/8 b - - 0 39
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
f4g5
f4f5
a6b4
a6b8
a6c5
a6c7
g7g5
g7g6
h7h5
h7h6

## Board State Fen
4B3/6pp/np2p3/1P2P3/3K1k2/5P2/6PP/8 b - - 0 39
assistant
a6c5