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
d1b1
d1c1
d1d2
e1f1
g1h1
g1f1
b2b4
b2b3
e2e4
e2e3
g2f1
g2h1
g2h3
h2h4
h2h3
c3b1
c3b5
c3d5
c3a2
c3e4
d3d4
f3e5
f3g5
f3d2
f3d4
f3h4
g3g4

## Board State Fen
r1bq1rk1/1pp2p2/2n2bpp/p2pp3/P7/2NP1NP1/1PP1PPBP/R2QR1K1 w - - 0 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
a1c1
a1b1
a1a3
a1a2
d1b1
d1c1
d1d2
e1f1
g1h1
g1f1
b2b4
b2b3
e2e4
e2e3
g2f1
g2h1
g2h3
h2h4
h2h3
c3b1
c3b5
c3d5
c3a2
c3e4
d3d4
f3e5
f3g5
f3d2
f3d4
f3h4
g3g4

## Board State Fen
r1bq1rk1/1pp2p2/2n2bpp/p2pp3/P7/2NP1NP1/1PP1PPBP/R2QR1K1 w - - 0 13
assistant
e2e4