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
b6b5
e6e5
f7f5
f7f6
g7g5
g7g6
h7h5
h7h6
b8a6
b8c6
b8d7
d8c7
d8h4
d8g5
d8f6
d8e7
d8c8
d8d4
d8d5
d8d6
d8d7
d8e8
f8e8
g8h8

## Board State Fen
rn1q1rk1/p4ppp/Bp2p3/8/3PP3/5N2/P2Q1PPP/2R1K2R b K - 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
b6b5
e6e5
f7f5
f7f6
g7g5
g7g6
h7h5
h7h6
b8a6
b8c6
b8d7
d8c7
d8h4
d8g5
d8f6
d8e7
d8c8
d8d4
d8d5
d8d6
d8d7
d8e8
f8e8
g8h8

## Board State Fen
rn1q1rk1/p4ppp/Bp2p3/8/3PP3/5N2/P2Q1PPP/2R1K2R b K - 0 13
assistant
b8a6