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
b1c1
b1a2
b1a1
d1c1
d1h1
d1g1
d1f1
d1e1
b2a1
b2c1
b2c3
c2c4
c2c3
d2c4
d2e4
d2f1
d2f3
e2f1
e2h5
e2g4
e2f3
e2e1
e2e5
e2e4
e2e3
f2f4
f2f3
g2g4
g2g3
a3a4
b3b4
d3a6
d3b5
d3c4
d3g6
d3f5
d3e4
h3e3
h3f3
h3g3
h3h1
h3h2
d4e5

## Board State Fen
1k1r3r/pbq2pb1/1p2pnp1/3pn2p/3P3P/PP1B3R/1BPNQPP1/1K1R4 w - - 0 16
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
b1c1
b1a2
b1a1
d1c1
d1h1
d1g1
d1f1
d1e1
b2a1
b2c1
b2c3
c2c4
c2c3
d2c4
d2e4
d2f1
d2f3
e2f1
e2h5
e2g4
e2f3
e2e1
e2e5
e2e4
e2e3
f2f4
f2f3
g2g4
g2g3
a3a4
b3b4
d3a6
d3b5
d3c4
d3g6
d3f5
d3e4
h3e3
h3f3
h3g3
h3h1
h3h2
d4e5

## Board State Fen
1k1r3r/pbq2pb1/1p2pnp1/3pn2p/3P3P/PP1B3R/1BPNQPP1/1K1R4 w - - 0 16
assistant
d4e5