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
b5b4
a6a5
c6b4
c6b8
c6d4
c6a5
c6a7
d6d5
g6f4
g6h4
g6h8
e7h4
e7g5
e7f6
f7f6
h7h6
a8a7
a8b8
c8b7
c8f5
c8e6
c8d7
d8a5
d8b6
d8c7
d8d7
d8e8
f8e8
g8h8

## Board State Fen
r1bq1rk1/4bppp/p1np2n1/1p2pP1Q/4P3/1NNBBR2/PPP3PP/R5K1 b - - 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
b5b4
a6a5
c6b4
c6b8
c6d4
c6a5
c6a7
d6d5
g6f4
g6h4
g6h8
e7h4
e7g5
e7f6
f7f6
h7h6
a8a7
a8b8
c8b7
c8f5
c8e6
c8d7
d8a5
d8b6
d8c7
d8d7
d8e8
f8e8
g8h8

## Board State Fen
r1bq1rk1/4bppp/p1np2n1/1p2pP1Q/4P3/1NNBBR2/PPP3PP/R5K1 b - - 0 13
assistant
g6f4