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
d1b1
d1c1
d1h1
d1g1
d1f1
d1e1
d1d8
d1d7
d1d6
d1d5
d1d4
d1d3
d1d2
a2a4
a2a3
b2b4
b2b3
e2d4
e2f4
e2c1
e2g1
g2h2
g2h1
g2g1
g2f2
g2f1
c3c4
e3c1
e3d2
e3c5
e3d4
e3g1
e3f2
e3h6
e3g5
e3f4
f3g4
f3f4
h3g4
h3h4
e5e6

## Board State Fen
r3k2r/ppp1bp2/8/2p1Pb1p/6p1/2P1BPPP/PP2N1K1/R2R4 w - - 0 21
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
d1b1
d1c1
d1h1
d1g1
d1f1
d1e1
d1d8
d1d7
d1d6
d1d5
d1d4
d1d3
d1d2
a2a4
a2a3
b2b4
b2b3
e2d4
e2f4
e2c1
e2g1
g2h2
g2h1
g2g1
g2f2
g2f1
c3c4
e3c1
e3d2
e3c5
e3d4
e3g1
e3f2
e3h6
e3g5
e3f4
f3g4
f3f4
h3g4
h3h4
e5e6

## Board State Fen
r3k2r/ppp1bp2/8/2p1Pb1p/6p1/2P1BPPP/PP2N1K1/R2R4 w - - 0 21
assistant
e2f4