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
a1c1
a1b1
a1a3
a1a2
d1b3
d1c2
d1e2
d1b1
d1c1
d1e1
f1e1
g1h1
d2c4
d2e4
d2b1
d2b3
g2g4
g2g3
h2h4
h2h3
c3c4
f3e1
f3g5
f3d4
f3h4
a4a5
b4b5

## Board State Fen
r3k2r/pp1qbp1p/2n1p2p/3pP3/PP6/2P2N2/3N1PPP/R2Q1RK1 w kq - 0 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
a1c1
a1b1
a1a3
a1a2
d1b3
d1c2
d1e2
d1b1
d1c1
d1e1
f1e1
g1h1
d2c4
d2e4
d2b1
d2b3
g2g4
g2g3
h2h4
h2h3
c3c4
f3e1
f3g5
f3d4
f3h4
a4a5
b4b5

## Board State Fen
r3k2r/pp1qbp1p/2n1p2p/3pP3/PP6/2P2N2/3N1PPP/R2Q1RK1 w kq - 0 15
assistant
d1e2