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
a1a7
a1a6
a1a5
a1a4
a1a3
a1a2
d1c2
d1h5
d1g4
d1f3
d1e2
d1b1
d1c1
d1e1
d1d3
d1d2
f1e1
f1f4
f1f3
f1f2
g1h1
g1f2
g2c6
g2d5
g2e4
g2f3
g2h1
g2h3
h2h4
h2h3
b3b4
c3b2
c3a5
c3b4
c3e1
c3d2
e3d5
e3c2
e3c4
e3g4
g3g4
d4d5
f5e6
f5f6

## Board State Fen
r4rk1/pbnq1ppp/1pp1p3/4PPb1/3P4/1PB1N1P1/6BP/R2Q1RK1 w - - 1 20
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
a1a7
a1a6
a1a5
a1a4
a1a3
a1a2
d1c2
d1h5
d1g4
d1f3
d1e2
d1b1
d1c1
d1e1
d1d3
d1d2
f1e1
f1f4
f1f3
f1f2
g1h1
g1f2
g2c6
g2d5
g2e4
g2f3
g2h1
g2h3
h2h4
h2h3
b3b4
c3b2
c3a5
c3b4
c3e1
c3d2
e3d5
e3c2
e3c4
e3g4
g3g4
d4d5
f5e6
f5f6

## Board State Fen
r4rk1/pbnq1ppp/1pp1p3/4PPb1/3P4/1PB1N1P1/6BP/R2Q1RK1 w - - 1 20
assistant
e3c4