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
a6b5
d6d5
b7e4
b7d5
b7c6
b7a7
b7b5
b7b6
b7e7
b7d7
b7c7
f7f5
f7f6
h7h5
h7h6
a8a7
b8c6
b8d7
c8h3
c8g4
c8f5
c8e6
c8d7
f8d8
f8e8
g8h8
g8g7

## Board State Fen
rnb2rk1/1q3p1p/p2p2p1/BP2p1Q1/2R1P3/3B4/2P2RPP/6K1 b - - 1 20
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
a6b5
d6d5
b7e4
b7d5
b7c6
b7a7
b7b5
b7b6
b7e7
b7d7
b7c7
f7f5
f7f6
h7h5
h7h6
a8a7
b8c6
b8d7
c8h3
c8g4
c8f5
c8e6
c8d7
f8d8
f8e8
g8h8
g8g7

## Board State Fen
rnb2rk1/1q3p1p/p2p2p1/BP2p1Q1/2R1P3/3B4/2P2RPP/6K1 b - - 1 20
assistant
a6b5