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
c2b1
c2a4
c2b3
c2h7
c2g6
c2f5
c2e4
c2d3
c2d2
f1e1
b2b4
b2b3
g1h2
g1h1
g1g2
d1e1
d1d8
d1d7
d1d6
d1d5
d1d4
d1d3
d1d2
c1d2
e2a6
e2b5
e2c4
e2d3
e2h5
e2g4
e2f3
f2f4
f2f3
a3a4
c3b1
c3b5
c3d5
c3a2
c3a4
c3e4
e3e4
g3g4
h3h4

## Board State Fen
3r1rk1/ppb2ppp/2p1qn2/2n5/8/P1N1P1PP/1PQ1BP2/2BR1RK1 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
c2b1
c2a4
c2b3
c2h7
c2g6
c2f5
c2e4
c2d3
c2d2
f1e1
b2b4
b2b3
g1h2
g1h1
g1g2
d1e1
d1d8
d1d7
d1d6
d1d5
d1d4
d1d3
d1d2
c1d2
e2a6
e2b5
e2c4
e2d3
e2h5
e2g4
e2f3
f2f4
f2f3
a3a4
c3b1
c3b5
c3d5
c3a2
c3a4
c3e4
e3e4
g3g4
h3h4

## Board State Fen
3r1rk1/ppb2ppp/2p1qn2/2n5/8/P1N1P1PP/1PQ1BP2/2BR1RK1 w - - 1 20
assistant
b2b4