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
f4e2
f4e6
f4g2
f4g6
f4d3
f4d5
f4h3
f4h5
b5b4
c5c4
h6h5
f7b7
f7c7
f7d7
f7e7
f7f5
f7f6
f7f8
g7b2
g7c3
g7d4
g7e5
g7f6
g7f8
g7h8
g8h8
g8h7
g8f8

## Board State Fen
6k1/NN3rb1/P6p/1pp5/5n2/8/1PP4P/3R2K1 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
f4e2
f4e6
f4g2
f4g6
f4d3
f4d5
f4h3
f4h5
b5b4
c5c4
h6h5
f7b7
f7c7
f7d7
f7e7
f7f5
f7f6
f7f8
g7b2
g7c3
g7d4
g7e5
g7f6
g7f8
g7h8
g8h8
g8h7
g8f8

## Board State Fen
6k1/NN3rb1/P6p/1pp5/5n2/8/1PP4P/3R2K1 b - - 0 39
assistant
g7d4