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
c2d1
c2h7
c2g6
c2f5
c2e4
c2d3
b2b4
b2b3
a2a4
a2a3
g1h1
f1b1
f1c1
f1d1
f1e1
a1e1
a1d1
a1c1
a1b1
d2c1
d2a5
d2b4
d2c3
d2e1
d2h6
d2g5
d2f4
d2e3
d2d1
d2e2
d2d3
f2f4
f2f3
g2g4
g2g3
h2h4
h2h3
c4c5
d4d5
e5d3
e5d7
e5f3
e5f7
e5c6
e5g4
e5g6

## Board State Fen
r2q1rk1/pbpn1ppp/1p2p3/4N3/2PP4/8/PPBQ1PPP/R4RK1 w - - 4 15
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
c2d1
c2h7
c2g6
c2f5
c2e4
c2d3
b2b4
b2b3
a2a4
a2a3
g1h1
f1b1
f1c1
f1d1
f1e1
a1e1
a1d1
a1c1
a1b1
d2c1
d2a5
d2b4
d2c3
d2e1
d2h6
d2g5
d2f4
d2e3
d2d1
d2e2
d2d3
f2f4
f2f3
g2g4
g2g3
h2h4
h2h3
c4c5
d4d5
e5d3
e5d7
e5f3
e5f7
e5c6
e5g4
e5g6

## Board State Fen
r2q1rk1/pbpn1ppp/1p2p3/4N3/2PP4/8/PPBQ1PPP/R4RK1 w - - 4 15
assistant
f1e1