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
b1c2
b1c1
b1a2
b1a1
d1c1
d1g1
d1f1
d1e1
d1d3
d1d2
h1e1
h1f1
h1g1
h1h3
h1h2
b2b4
b2b3
e2f4
e2c1
e2g1
e2g3
a3a4
c3b5
c3d5
c3a2
c3a4
f3f4
d4e5
d4d5
e4c2
e4d3
e4b7
e4c6
e4d5
e4g6
e4f5
e4g4
e4f4
e4e5

## Board State Fen
r2r2k1/1ppqpp2/pn4p1/4b1Pp/2nPQ2P/P1N1PP2/1P2N3/1K1R3R 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
b1c2
b1c1
b1a2
b1a1
d1c1
d1g1
d1f1
d1e1
d1d3
d1d2
h1e1
h1f1
h1g1
h1h3
h1h2
b2b4
b2b3
e2f4
e2c1
e2g1
e2g3
a3a4
c3b5
c3d5
c3a2
c3a4
f3f4
d4e5
d4d5
e4c2
e4d3
e4b7
e4c6
e4d5
e4g6
e4f5
e4g4
e4f4
e4e5

## Board State Fen
r2r2k1/1ppqpp2/pn4p1/4b1Pp/2nPQ2P/P1N1PP2/1P2N3/1K1R3R w - - 0 21
assistant
d4e5