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
b5a4
a6a5
d6d5
f6e4
f6e8
f6g4
f6d5
f6h5
g6g5
b7e4
b7d5
b7c6
b7c8
c7c5
c7c6
d7c5
d7b6
d7b8
g7h6
g7h8
h7h5
h7h6
a8a7
a8c8
a8b8
d8e7
d8b8
d8c8
d8e8
f8e8
g8h8

## Board State Fen
r2q1rk1/1bpn1pbp/p2p1np1/1p2p3/PP2P3/2PP1N1P/2BN1PP1/R1BQR1K1 b - b3 0 13
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
b5a4
a6a5
d6d5
f6e4
f6e8
f6g4
f6d5
f6h5
g6g5
b7e4
b7d5
b7c6
b7c8
c7c5
c7c6
d7c5
d7b6
d7b8
g7h6
g7h8
h7h5
h7h6
a8a7
a8c8
a8b8
d8e7
d8b8
d8c8
d8e8
f8e8
g8h8

## Board State Fen
r2q1rk1/1bpn1pbp/p2p1np1/1p2p3/PP2P3/2PP1N1P/2BN1PP1/R1BQR1K1 b - b3 0 13
assistant
c7c5