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
f1b5
f1c4
f1d3
f1e2
f1h3
f1g2
d1e1
d1d4
d1d3
d1d2
h1g1
h1h3
h1h2
c1d2
c1b2
c1b1
c2c4
c2c3
e3d2
e3d4
e3g1
e3f2
e4e5
f4f5
h4h5
d5c3
d5c7
d5e7
d5b6
d5f6
g5g6

## Board State Fen
1r2kb1r/2qn1ppp/2bp4/1p1N2P1/1P1pPP1P/4B3/2P5/2KR1B1R w k - 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
f1b5
f1c4
f1d3
f1e2
f1h3
f1g2
d1e1
d1d4
d1d3
d1d2
h1g1
h1h3
h1h2
c1d2
c1b2
c1b1
c2c4
c2c3
e3d2
e3d4
e3g1
e3f2
e4e5
f4f5
h4h5
d5c3
d5c7
d5e7
d5b6
d5f6
g5g6

## Board State Fen
1r2kb1r/2qn1ppp/2bp4/1p1N2P1/1P1pPP1P/4B3/2P5/2KR1B1R w k - 0 18
assistant
d5c7