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
e1b1
e1c1
e1d1
e1f1
e1e8
e1e7
e1e6
e1e5
e1e4
e1e3
e1e2
f3e5
f3g5
f3d2
f3h4
a3a4
g3f1
g3f5
g3h1
g3h5
g3e2
g3e4
h6c1
h6d2
h6e3
h6f4
h6g5
h6f8
h6g7
b3a2
b3a4
b3d1
b3c2
b3d5
b3c4
h2h4
h2h3
g1h1
g1f1
d3b1
d3c2
d3b5
d3c4
d3f1
d3e2
d3f5
d3e4
d3c3
d3d1
d3d2
d3e3
a1d1
a1c1
a1b1
a1a2

## Board State Fen
3rr2k/1bpq3p/p1n2bpB/1p1n1p2/3P4/PB1Q1NN1/1P3PPP/R3R1K1 w - - 4 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
e1b1
e1c1
e1d1
e1f1
e1e8
e1e7
e1e6
e1e5
e1e4
e1e3
e1e2
f3e5
f3g5
f3d2
f3h4
a3a4
g3f1
g3f5
g3h1
g3h5
g3e2
g3e4
h6c1
h6d2
h6e3
h6f4
h6g5
h6f8
h6g7
b3a2
b3a4
b3d1
b3c2
b3d5
b3c4
h2h4
h2h3
g1h1
g1f1
d3b1
d3c2
d3b5
d3c4
d3f1
d3e2
d3f5
d3e4
d3c3
d3d1
d3d2
d3e3
a1d1
a1c1
a1b1
a1a2

## Board State Fen
3rr2k/1bpq3p/p1n2bpB/1p1n1p2/3P4/PB1Q1NN1/1P3PPP/R3R1K1 w - - 4 21
assistant
d3d2