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
a2a4
a2a3
g1h2
g1h1
g1f1
e1a1
e1b1
e1c1
e1d1
e1f1
b2b4
b2b3
d2c2
d2d1
e2d1
e2f1
e2h5
e2g4
e2f3
e2e4
e2e3
f2f4
f2f3
c3c4
d3b1
d3c2
d3a6
d3b5
d3c4
d3e4
g3g4
d4c2
d4c6
d4e6
d4b3
d4b5
d4f3
d4f5

## Board State Fen
r2r2k1/1bqn1pp1/pp2p2p/8/3Nn3/2PB2P1/PP1RQPP1/4R1K1 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
a2a4
a2a3
g1h2
g1h1
g1f1
e1a1
e1b1
e1c1
e1d1
e1f1
b2b4
b2b3
d2c2
d2d1
e2d1
e2f1
e2h5
e2g4
e2f3
e2e4
e2e3
f2f4
f2f3
c3c4
d3b1
d3c2
d3a6
d3b5
d3c4
d3e4
g3g4
d4c2
d4c6
d4e6
d4b3
d4b5
d4f3
d4f5

## Board State Fen
r2r2k1/1bqn1pp1/pp2p2p/8/3Nn3/2PB2P1/PP1RQPP1/4R1K1 w - - 0 18
assistant
d3e4