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
d1a4
d1b3
d1c2
d1e2
d1b1
d1c1
d1d4
d1d3
d1d2
d5c3
d5c7
d5e3
d5e7
d5b4
d5b6
d5f4
d5f6
c4c5
e1h1
e1g1
e1f1
e1e3
e1e2
e4b1
e4c2
e4d3
e4f5
f3f4
h2h4
h2h3
g3g4
f2g2
f2g1
f2f1
f2e2
a2a4
a2a3
a1c1
a1b1

## Board State Fen
r2q2k1/pp4pp/2n5/3Nrb2/2PpB3/5PP1/P4K1P/R2QR3 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
d1a4
d1b3
d1c2
d1e2
d1b1
d1c1
d1d4
d1d3
d1d2
d5c3
d5c7
d5e3
d5e7
d5b4
d5b6
d5f4
d5f6
c4c5
e1h1
e1g1
e1f1
e1e3
e1e2
e4b1
e4c2
e4d3
e4f5
f3f4
h2h4
h2h3
g3g4
f2g2
f2g1
f2f1
f2e2
a2a4
a2a3
a1c1
a1b1

## Board State Fen
r2q2k1/pp4pp/2n5/3Nrb2/2PpB3/5PP1/P4K1P/R2QR3 w - - 1 20
assistant
e4f5