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
d1b1
d1c1
d1h1
d1g1
d1f1
d1e1
d1d3
d1d2
c2c4
c2c3
b2b4
b2b3
a2a4
a2a3
a1c1
a1b1
g2g3
g2g1
g2f2
g2f1
d4c6
d4e2
d4e6
d4b3
d4b5
d4f5
f4c1
f4d2
f4e3
f4h2
f4g3
f4h6
f4g5
g4g5
e5e6

## Board State Fen
3rk2r/ppp2pp1/2p3b1/2b1P3/3N1BP1/5P2/PPP3K1/R2R4 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
d1b1
d1c1
d1h1
d1g1
d1f1
d1e1
d1d3
d1d2
c2c4
c2c3
b2b4
b2b3
a2a4
a2a3
a1c1
a1b1
g2g3
g2g1
g2f2
g2f1
d4c6
d4e2
d4e6
d4b3
d4b5
d4f5
f4c1
f4d2
f4e3
f4h2
f4g3
f4h6
f4g5
g4g5
e5e6

## Board State Fen
3rk2r/ppp2pp1/2p3b1/2b1P3/3N1BP1/5P2/PPP3K1/R2R4 w - - 1 20
assistant
c2c3