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
b4a2
b4a6
b4c2
b4c6
b4d3
b4d5
a5a3
a5a4
a5d5
a5c5
a5b5
a5a6
b6b5
g6g5
a7a6
d7a4
d7b5
d7c6
d7h3
d7g4
d7f5
d7e6
e7e5
e7e6
f7f5
f7f6
g7a1
g7b2
g7c3
g7d4
g7e5
g7f6
g7f8
g7h6
g7h8
h7h5
h7h6
c8a8
c8b8
c8c4
c8c5
c8c6
c8c7
c8d8
e8d8
e8f8
g8h8
g8f8

## Board State Fen
2r1r1k1/p2bppbp/1p1p2p1/q2P4/1nP5/PP2B1PP/3Q1PB1/1NRR2K1 b - - 0 19
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
b4a2
b4a6
b4c2
b4c6
b4d3
b4d5
a5a3
a5a4
a5d5
a5c5
a5b5
a5a6
b6b5
g6g5
a7a6
d7a4
d7b5
d7c6
d7h3
d7g4
d7f5
d7e6
e7e5
e7e6
f7f5
f7f6
g7a1
g7b2
g7c3
g7d4
g7e5
g7f6
g7f8
g7h6
g7h8
h7h5
h7h6
c8a8
c8b8
c8c4
c8c5
c8c6
c8c7
c8d8
e8d8
e8f8
g8h8
g8f8

## Board State Fen
2r1r1k1/p2bppbp/1p1p2p1/q2P4/1nP5/PP2B1PP/3Q1PB1/1NRR2K1 b - - 0 19
assistant
b4a6