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
b4a3
b4a5
b4c3
b4e7
b4d6
b4c5
h7h5
h7h6
a6f1
a6e2
a6d3
a6c4
a6b5
a6c8
a6b7
a8c8
a8b8
d7d5
d7d6
c6c5
g6f4
g6h4
g6h8
g6e5
g6e7
e6e5
f5e4
f5f4
d8a5
d8b6
d8c7
d8h4
d8g5
d8f6
d8e7
d8b8
d8c8
d8e8
f8e8
f8f6
f8f7
g8h8
g8f7

## Board State Fen
r2q1rk1/p2p2pp/b1p1p1n1/5p2/1b1PP3/1PN2N2/P2B1PPP/R2QR1K1 b - - 2 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
b4a3
b4a5
b4c3
b4e7
b4d6
b4c5
h7h5
h7h6
a6f1
a6e2
a6d3
a6c4
a6b5
a6c8
a6b7
a8c8
a8b8
d7d5
d7d6
c6c5
g6f4
g6h4
g6h8
g6e5
g6e7
e6e5
f5e4
f5f4
d8a5
d8b6
d8c7
d8h4
d8g5
d8f6
d8e7
d8b8
d8c8
d8e8
f8e8
f8f6
f8f7
g8h8
g8f7

## Board State Fen
r2q1rk1/p2p2pp/b1p1p1n1/5p2/1b1PP3/1PN2N2/P2B1PPP/R2QR1K1 b - - 2 13
assistant
g6h4