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
a1b1
c1h6
c1g5
c1f4
c1e3
c1d2
e1d1
e1f1
e1e3
e1e2
g1h2
g1h1
g1f1
a2a4
a2a3
b2b4
b2b3
c2b1
c2a4
c2b3
c2d1
c2d3
g2g4
g2g3
c3c4
f3e5
f3g5
f3d2
f3d4
f3h2
f3h4
h3h4

## Board State Fen
r2r2k1/1pp2pp1/1pb2nnp/4p3/4P3/2P2N1P/PPB2PP1/R1B1R1K1 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
a1b1
c1h6
c1g5
c1f4
c1e3
c1d2
e1d1
e1f1
e1e3
e1e2
g1h2
g1h1
g1f1
a2a4
a2a3
b2b4
b2b3
c2b1
c2a4
c2b3
c2d1
c2d3
g2g4
g2g3
c3c4
f3e5
f3g5
f3d2
f3d4
f3h2
f3h4
h3h4

## Board State Fen
r2r2k1/1pp2pp1/1pb2nnp/4p3/4P3/2P2N1P/PPB2PP1/R1B1R1K1 w - - 0 17
assistant
a2a4