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
d1h5
d1g4
d1f3
d1e2
d1b1
d1c1
d1d8
d1d7
d1d6
d1d5
d1d4
d1d3
d1d2
e1f1
e1e2
g1h1
g1f1
a2a4
a2a3
f2f4
f2f3
g2f1
g2e4
g2f3
g2h1
g2h3
h2h4
h2h3
b3a5
b3c1
b3c5
b3d2
b3d4
c3b1
c3b5
c3d5
c3a4
c3e2
c3e4
g3g4
c4c5

## Board State Fen
r3r1k1/1bp1qpb1/1pn3pp/p7/2P1p3/1NN1P1P1/PP3PBP/R2QR1K1 w - - 0 18
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
d1h5
d1g4
d1f3
d1e2
d1b1
d1c1
d1d8
d1d7
d1d6
d1d5
d1d4
d1d3
d1d2
e1f1
e1e2
g1h1
g1f1
a2a4
a2a3
f2f4
f2f3
g2f1
g2e4
g2f3
g2h1
g2h3
h2h4
h2h3
b3a5
b3c1
b3c5
b3d2
b3d4
c3b1
c3b5
c3d5
c3a4
c3e2
c3e4
g3g4
c4c5

## Board State Fen
r3r1k1/1bp1qpb1/1pn3pp/p7/2P1p3/1NN1P1P1/PP3PBP/R2QR1K1 w - - 0 18
assistant
c3e4