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
a5c3
a5b4
a5d8
a5c7
a5b6
a5a2
a5a3
a5a4
a5h5
a5g5
a5f5
a5e5
a5d5
a5c5
a5b5
a5a6
e7d8
e7h4
e7g5
e7f6
a8b8
f7f5
f7f6
a7a6
h7h5
h7h6
b7b5
b7b6
d6d5
g6f4
g6h4
g6h8
g6e5
c6c5
c8h3
c8g4
c8f5
c8e6
c8d7
f8d8
f8e8
g8h8

## Board State Fen
r1b2rk1/pp2bppp/2pp2n1/q7/3BPP2/2N3Q1/P1P1B1PP/3R1RK1 b - - 6 15
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
a5c3
a5b4
a5d8
a5c7
a5b6
a5a2
a5a3
a5a4
a5h5
a5g5
a5f5
a5e5
a5d5
a5c5
a5b5
a5a6
e7d8
e7h4
e7g5
e7f6
a8b8
f7f5
f7f6
a7a6
h7h5
h7h6
b7b5
b7b6
d6d5
g6f4
g6h4
g6h8
g6e5
c6c5
c8h3
c8g4
c8f5
c8e6
c8d7
f8d8
f8e8
g8h8

## Board State Fen
r1b2rk1/pp2bppp/2pp2n1/q7/3BPP2/2N3Q1/P1P1B1PP/3R1RK1 b - - 6 15
assistant
c6c5