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
c1d1
c1c3
c1c2
e1f2
e1d2
e1d1
h1g1
h1h2
a2a4
a2a3
e2d4
e2c3
e2g1
e2g3
g2g4
g2g3
b3b4
e3d2
e3b6
e3c5
e3d4
e3g1
e3f2
h3h4
c4c5
f4f5

## Board State Fen
r1b1r1k1/ppp2ppp/1n1p1n2/3P4/2P2P2/1P2B2P/P3N1P1/2R1KB1R w K - 0 19
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
c1d1
c1c3
c1c2
e1f2
e1d2
e1d1
h1g1
h1h2
a2a4
a2a3
e2d4
e2c3
e2g1
e2g3
g2g4
g2g3
b3b4
e3d2
e3b6
e3c5
e3d4
e3g1
e3f2
h3h4
c4c5
f4f5

## Board State Fen
r1b1r1k1/ppp2ppp/1n1p1n2/3P4/2P2P2/1P2B2P/P3N1P1/2R1KB1R w K - 0 19
assistant
e1f2