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
b1a3
b1d2
c1h6
c1g5
c1f4
c1e3
c1d2
e1d2
e1d1
e1e8
e1e7
e1e6
e1e5
e1e4
e1e3
e1e2
f1a6
f1b5
f1c4
f1d3
f1e2
g1h1
a2a4
a2a3
b2b4
b2b3
f2f4
f2f3
g2g4
g2g3
h2h4
h2h3
c3c4
d4d5

## Board State Fen
r1bqn1k1/pppp1ppp/5b2/8/3P4/2P5/PP3PPP/RNB1QBK1 w - - 1 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
b1a3
b1d2
c1h6
c1g5
c1f4
c1e3
c1d2
e1d2
e1d1
e1e8
e1e7
e1e6
e1e5
e1e4
e1e3
e1e2
f1a6
f1b5
f1c4
f1d3
f1e2
g1h1
a2a4
a2a3
b2b4
b2b3
f2f4
f2f3
g2g4
g2g3
h2h4
h2h3
c3c4
d4d5

## Board State Fen
r1bqn1k1/pppp1ppp/5b2/8/3P4/2P5/PP3PPP/RNB1QBK1 w - - 1 13
assistant
c1f4