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
a5a3
a5a4
a5a8
a5a7
a5a6
b7a6
b7a8
b7c8
h6h5
c6c5
g5g4
d7c5
d7e5
d7b6
d7b8
d7f6
d7f8
f7f5
f7f6
g7d4
g7e5
g7f6
g7f8
g7h8
d8b6
d8c7
d8f6
d8e7
d8a8
d8b8
d8c8
e8e3
e8e4
e8e5
e8e6
e8e7
e8f8
g8h8
g8f8

## Board State Fen
3qr1k1/1b1n1pb1/2p4p/rp1p2p1/1N1P4/P2BPNP1/2Q2PP1/R4RK1 b - - 1 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
a5a3
a5a4
a5a8
a5a7
a5a6
b7a6
b7a8
b7c8
h6h5
c6c5
g5g4
d7c5
d7e5
d7b6
d7b8
d7f6
d7f8
f7f5
f7f6
g7d4
g7e5
g7f6
g7f8
g7h8
d8b6
d8c7
d8f6
d8e7
d8a8
d8b8
d8c8
e8e3
e8e4
e8e5
e8e6
e8e7
e8f8
g8h8
g8f8

## Board State Fen
3qr1k1/1b1n1pb1/2p4p/rp1p2p1/1N1P4/P2BPNP1/2Q2PP1/R4RK1 b - - 1 18
assistant
d8a8