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
f1a6
f1b5
f1c4
f1d3
f1e2
e5a5
e5b5
e5c5
e5d5
e5e1
e5e2
e5e3
e5e4
e5h5
e5g5
e5f5
e5e7
e5e6
f2f4
f2f3
h2h4
h2h3
c2c4
c2c3
d2d4
d2d3
a2a4
a2a3
g1h1
g2g4
g2g3
b2b4
b2b3
d1h5
d1g4
d1f3
d1e2
d1e1
b1a3
b1c3

## Board State Fen
r1bq1rk1/ppppbppp/3n4/4R3/8/8/PPPP1PPP/RNBQ1BK1 w - - 1 9
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
f1a6
f1b5
f1c4
f1d3
f1e2
e5a5
e5b5
e5c5
e5d5
e5e1
e5e2
e5e3
e5e4
e5h5
e5g5
e5f5
e5e7
e5e6
f2f4
f2f3
h2h4
h2h3
c2c4
c2c3
d2d4
d2d3
a2a4
a2a3
g1h1
g2g4
g2g3
b2b4
b2b3
d1h5
d1g4
d1f3
d1e2
d1e1
b1a3
b1c3

## Board State Fen
r1bq1rk1/ppppbppp/3n4/4R3/8/8/PPPP1PPP/RNBQ1BK1 w - - 1 9
assistant
d2d4