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
d1b1
d1c1
d1h1
d1g1
d1f1
d1e1
d1d8
d1d7
d1d6
d1d5
d1d4
d1d3
d1d2
a2a4
a2a3
b2b4
b2b3
e2e4
e2e3
g2h3
g2h1
g2g1
g2f1
h2h4
h2h3
c3b1
c3b5
c3d5
c3a4
c3e4
f3a8
f3b7
f3c6
f3d5
f3e4
f3h5
f3g4
f3d3
f3e3
g3g4
f4c1
f4d2
f4e3
f4h6
f4g5
e5d3
e5d7
e5f7
e5c4
e5c6
e5g4
e5g6

## Board State Fen
2r1qrk1/p3bppp/4pn2/1pn1N3/5B2/2N2QP1/PP2PPKP/R2R4 w - - 0 17
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
d1b1
d1c1
d1h1
d1g1
d1f1
d1e1
d1d8
d1d7
d1d6
d1d5
d1d4
d1d3
d1d2
a2a4
a2a3
b2b4
b2b3
e2e4
e2e3
g2h3
g2h1
g2g1
g2f1
h2h4
h2h3
c3b1
c3b5
c3d5
c3a4
c3e4
f3a8
f3b7
f3c6
f3d5
f3e4
f3h5
f3g4
f3d3
f3e3
g3g4
f4c1
f4d2
f4e3
f4h6
f4g5
e5d3
e5d7
e5f7
e5c4
e5c6
e5g4
e5g6

## Board State Fen
2r1qrk1/p3bppp/4pn2/1pn1N3/5B2/2N2QP1/PP2PPKP/R2R4 w - - 0 17
assistant
b2b4