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
b6a4
b6c4
b6c8
b6d7
c6c5
f6e4
f6g4
f6d7
f6h5
f6h7
h6h5
a7a5
a7a6
e7a3
e7b4
e7c5
e7d6
e7d8
e7f8
e7c7
e7d7
e7e3
e7e4
e7e5
e7e6
g7g5
g7g6
a8d8
a8c8
a8b8
e8b8
e8c8
e8d8
e8f8
g8h8
g8f8

## Board State Fen
r3r1k1/pp2qpp1/1np2n1p/3p1B2/3P2PP/2N1P3/PPQ2P2/2KR3R 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
b6a4
b6c4
b6c8
b6d7
c6c5
f6e4
f6g4
f6d7
f6h5
f6h7
h6h5
a7a5
a7a6
e7a3
e7b4
e7c5
e7d6
e7d8
e7f8
e7c7
e7d7
e7e3
e7e4
e7e5
e7e6
g7g5
g7g6
a8d8
a8c8
a8b8
e8b8
e8c8
e8d8
e8f8
g8h8
g8f8

## Board State Fen
r3r1k1/pp2qpp1/1np2n1p/3p1B2/3P2PP/2N1P3/PPQ2P2/2KR3R b - - 0 18
assistant
f6e4