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
f5e4
f5c8
f5d7
f5e6
f5h3
f5g4
f5h7
f5g6
c6b4
c6d4
c6a5
c6a7
c6e7
d6d5
f6e7
f6h4
f6g5
h6h5
b7b5
b7b6
g7g5
g7g6
b8a8
b8c8
d8e7
d8c8
d8d7
d8e8
f8e8
f8f7
f8g8
h8h7
h8g8

## Board State Fen
1r1q1r1k/1pp3p1/p1np1b1p/P3pb2/4B3/2PP1NB1/1P3PPP/R2QR1K1 b - - 5 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
f5e4
f5c8
f5d7
f5e6
f5h3
f5g4
f5h7
f5g6
c6b4
c6d4
c6a5
c6a7
c6e7
d6d5
f6e7
f6h4
f6g5
h6h5
b7b5
b7b6
g7g5
g7g6
b8a8
b8c8
d8e7
d8c8
d8d7
d8e8
f8e8
f8f7
f8g8
h8h7
h8g8

## Board State Fen
1r1q1r1k/1pp3p1/p1np1b1p/P3pb2/4B3/2PP1NB1/1P3PPP/R2QR1K1 b - - 5 18
assistant
f5e4