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
a1e1
a1d1
a1c1
a1b1
a1a6
a1a5
a1a4
a1a3
a1a2
f1b1
f1c1
f1d1
f1e1
g1h1
f2f4
f2f3
g2g4
g2g3
h2h4
h2h3
b3b4
d3b1
d3c2
d3e2
d3c3
d3d1
d3d2
d3h3
d3g3
d3f3
d3e3
d3d5
d3d4
c4d5
c4c5
e4d5

## Board State Fen
2r2rk1/1p3ppp/p2p4/3bp1q1/2P1P3/1P1Q4/1P3PPP/R4RK1 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
a1e1
a1d1
a1c1
a1b1
a1a6
a1a5
a1a4
a1a3
a1a2
f1b1
f1c1
f1d1
f1e1
g1h1
f2f4
f2f3
g2g4
g2g3
h2h4
h2h3
b3b4
d3b1
d3c2
d3e2
d3c3
d3d1
d3d2
d3h3
d3g3
d3f3
d3e3
d3d5
d3d4
c4d5
c4c5
e4d5

## Board State Fen
2r2rk1/1p3ppp/p2p4/3bp1q1/2P1P3/1P1Q4/1P3PPP/R4RK1 w - - 0 18
assistant
d3d5