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
c6b4
c6b8
c6d4
c6d8
c6a5
c6a7
c6e7
e6b3
e6c4
e6d5
e6c8
e6d7
e6h3
e6g4
e6f5
d6d5
a6a5
b5a4
f6d8
f6e7
f6h4
f6g5
f6f3
f6f4
f6f5
f6g6
h6h5
b7b6
g7g5
g7g6
a8a7
a8e8
a8d8
a8c8
a8b8
f8b8
f8c8
f8d8
f8e8
g8h8
g8h7

## Board State Fen
r4rk1/1p3pp1/p1npbq1p/1p2p3/PP2P3/1BPP1N2/5PPP/R2QR1K1 b - a3 0 16
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
c6b4
c6b8
c6d4
c6d8
c6a5
c6a7
c6e7
e6b3
e6c4
e6d5
e6c8
e6d7
e6h3
e6g4
e6f5
d6d5
a6a5
b5a4
f6d8
f6e7
f6h4
f6g5
f6f3
f6f4
f6f5
f6g6
h6h5
b7b6
g7g5
g7g6
a8a7
a8e8
a8d8
a8c8
a8b8
f8b8
f8c8
f8d8
f8e8
g8h8
g8h7

## Board State Fen
r4rk1/1p3pp1/p1npbq1p/1p2p3/PP2P3/1BPP1N2/5PPP/R2QR1K1 b - a3 0 16
assistant
b5a4