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
c1f1
c1e1
c1d1
c1c2
g1h2
g1h1
g1f2
g1f1
g2f1
g2f3
g2h1
g2h3
c3a1
c3b2
c3e1
c3d2
c3e5
c3d4
g3g4
b4b5
f4e5
f4f5
h4h5

## Board State Fen
7k/1ppr2pp/4bp2/4p3/1Pn1PP1P/2B1P1P1/6B1/2R3K1 w - - 6 39
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
c1f1
c1e1
c1d1
c1c2
g1h2
g1h1
g1f2
g1f1
g2f1
g2f3
g2h1
g2h3
c3a1
c3b2
c3e1
c3d2
c3e5
c3d4
g3g4
b4b5
f4e5
f4f5
h4h5

## Board State Fen
7k/1ppr2pp/4bp2/4p3/1Pn1PP1P/2B1P1P1/6B1/2R3K1 w - - 6 39
assistant
f4e5