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
g2g4
g2g3
a2a4
a2a3
c2c4
c2c3
g1h2
g1h1
e1e2
d1e2
d1b1
d1c1
d1d5
d1d4
d1d3
d1d2
a1c1
a1b1
b3a5
b3c1
b3c5
b3d2
b3d4
e3c1
e3d2
e3a7
e3b6
e3c5
e3d4
e3f4
f3e5
f3g5
f3d2
f3d4
f3h2
f3h4
h3h4

## Board State Fen
r2q1rk1/1p3ppp/p1nb4/3p1b2/5n2/1N2BN1P/PPP2PP1/R2QRBK1 w - - 3 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
f1a6
f1b5
f1c4
f1d3
f1e2
g2g4
g2g3
a2a4
a2a3
c2c4
c2c3
g1h2
g1h1
e1e2
d1e2
d1b1
d1c1
d1d5
d1d4
d1d3
d1d2
a1c1
a1b1
b3a5
b3c1
b3c5
b3d2
b3d4
e3c1
e3d2
e3a7
e3b6
e3c5
e3d4
e3f4
f3e5
f3g5
f3d2
f3d4
f3h2
f3h4
h3h4

## Board State Fen
r2q1rk1/1p3ppp/p1nb4/3p1b2/5n2/1N2BN1P/PPP2PP1/R2QRBK1 w - - 3 15
assistant
b3c5