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
a1c1
a1b1
a1a3
a1a2
d1e2
d1b1
d1c1
d1d2
e1f1
e1e3
e1e2
g1h2
g1h1
g1f1
b2a3
b2c1
b2e5
b2d4
b2c3
c2c4
c2c3
g2g4
g2g3
d3d4
f3e5
f3g5
f3d2
f3d4
f3h2
f3h4
h3h4
a4a5
e4f5
b7a6
b7a8
b7d5
b7c6
b7c8

## Board State Fen
1r3r2/1B1bq1bk/p2p2pp/2p1pp2/Pn2P3/1P1P1N1P/1BP2PP1/R2QR1K1 w - - 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
a1c1
a1b1
a1a3
a1a2
d1e2
d1b1
d1c1
d1d2
e1f1
e1e3
e1e2
g1h2
g1h1
g1f1
b2a3
b2c1
b2e5
b2d4
b2c3
c2c4
c2c3
g2g4
g2g3
d3d4
f3e5
f3g5
f3d2
f3d4
f3h2
f3h4
h3h4
a4a5
e4f5
b7a6
b7a8
b7d5
b7c6
b7c8

## Board State Fen
1r3r2/1B1bq1bk/p2p2pp/2p1pp2/Pn2P3/1P1P1N1P/1BP2PP1/R2QR1K1 w - - 1 20
assistant
b7d5