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
d1c2
d1e2
d1b1
d1c1
d1d2
e1f1
e1e3
e1e2
g1h1
a2a3
g2g4
g2g3
h2h4
h2h3
b3b4
f3e5
f3g5
f3d2
f3h4
a4b2
a4b6
a4c3
a4c5
d4d5
e4f5
e4e5

## Board State Fen
r2q1rk1/p2p2pp/b1p1p3/5p2/N2PPn2/1P3N2/P2b1PPP/R2QR1K1 w - - 0 15
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
d1c2
d1e2
d1b1
d1c1
d1d2
e1f1
e1e3
e1e2
g1h1
a2a3
g2g4
g2g3
h2h4
h2h3
b3b4
f3e5
f3g5
f3d2
f3h4
a4b2
a4b6
a4c3
a4c5
d4d5
e4f5
e4e5

## Board State Fen
r2q1rk1/p2p2pp/b1p1p3/5p2/N2PPn2/1P3N2/P2b1PPP/R2QR1K1 w - - 0 15
assistant
d1d2