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
c1a1
c1b1
c1c6
c1c5
c1c4
c1c3
c1c2
d1a4
d1b3
d1c2
d1e1
f1e1
g1h1
d2c3
d2e1
d2h6
d2g5
d2f4
d2e3
e2e3
f2f4
f2f3
g2f3
g2h1
g2h3
h2h4
h2h3
g3g4
b4b5
e4d6
e4f6
e4c3
e4c5
e4g5
a5a6

## Board State Fen
r1nqrbk1/pp4pp/2p2p2/P2b4/1P1pN3/3P2P1/3BPPBP/2RQ1RK1 w - - 1 18
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
c1a1
c1b1
c1c6
c1c5
c1c4
c1c3
c1c2
d1a4
d1b3
d1c2
d1e1
f1e1
g1h1
d2c3
d2e1
d2h6
d2g5
d2f4
d2e3
e2e3
f2f4
f2f3
g2f3
g2h1
g2h3
h2h4
h2h3
g3g4
b4b5
e4d6
e4f6
e4c3
e4c5
e4g5
a5a6

## Board State Fen
r1nqrbk1/pp4pp/2p2p2/P2b4/1P1pN3/3P2P1/3BPPBP/2RQ1RK1 w - - 1 18
assistant
e2e3