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
f5f4
a6a5
c6b6
c6c5
c6d6
c6c8
c6c7
e6c8
e6d7
e6f7
g7g5
g7g6
h7h5
h7h6
d8a5
d8b6
d8c7
d8h4
d8g5
d8f6
d8e7
d8a8
d8b8
d8c8
d8d6
d8d7
e8e7
e8f8
g8h8
g8f7

## Board State Fen
3qr1k1/6pp/p1r1b3/1pBpPp2/3Q4/1P6/1P3PPP/R4RK1 b - - 4 22
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
f5f4
a6a5
c6b6
c6c5
c6d6
c6c8
c6c7
e6c8
e6d7
e6f7
g7g5
g7g6
h7h5
h7h6
d8a5
d8b6
d8c7
d8h4
d8g5
d8f6
d8e7
d8a8
d8b8
d8c8
d8d6
d8d7
e8e7
e8f8
g8h8
g8f7

## Board State Fen
3qr1k1/6pp/p1r1b3/1pBpPp2/3Q4/1P6/1P3PPP/R4RK1 b - - 4 22
assistant
f5f4