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
c4a2
c4b3
c4a6
c4b5
c4e2
c4d3
c4e6
c4d5
h2h4
h2h3
d1a4
d1b3
d1c2
d1h5
d1g4
d1f3
d1e2
d1b1
d1c1
d1e1
d1d3
d1d2
f2f4
f2f3
g2g4
g2g3
g1h1
a1c1
a1b1
a1a5
a1a4
a1a3
a1a2
f1e1
d4c2
d4c6
d4e2
d4e6
d4b3
d4b5
d4f3
d4f5
e4e5
b6b7

## Board State Fen
r1b2rk1/3n1pp1/1P2pq1p/p7/2BNP3/2P5/5PPP/R2Q1RK1 w - - 1 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
c4a2
c4b3
c4a6
c4b5
c4e2
c4d3
c4e6
c4d5
h2h4
h2h3
d1a4
d1b3
d1c2
d1h5
d1g4
d1f3
d1e2
d1b1
d1c1
d1e1
d1d3
d1d2
f2f4
f2f3
g2g4
g2g3
g1h1
a1c1
a1b1
a1a5
a1a4
a1a3
a1a2
f1e1
d4c2
d4c6
d4e2
d4e6
d4b3
d4b5
d4f3
d4f5
e4e5
b6b7

## Board State Fen
r1b2rk1/3n1pp1/1P2pq1p/p7/2BNP3/2P5/5PPP/R2Q1RK1 w - - 1 15
assistant
d4e6