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
c1e3
c1d2
a1b1
a1a3
a1a2
e1d1
e1f1
e1e7
e1e6
e1e5
e1e4
e1e3
e1e2
g1h2
g1h1
g1f1
b2b4
b2b3
c2c4
c2c3
f2a7
f2b6
f2c5
f2d4
f2e3
f2h4
f2g3
f2d2
f2e2
f2f1
f2f3
g2f1
g2e4
g2f3
g2h1
h3h4
a4b5
a4a5
f4f5
g4g5

## Board State Fen
r2q1b1r/1b1knppp/p2p4/1p1P4/P4PP1/7P/1PP2QB1/R1B1R1K1 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
c1e3
c1d2
a1b1
a1a3
a1a2
e1d1
e1f1
e1e7
e1e6
e1e5
e1e4
e1e3
e1e2
g1h2
g1h1
g1f1
b2b4
b2b3
c2c4
c2c3
f2a7
f2b6
f2c5
f2d4
f2e3
f2h4
f2g3
f2d2
f2e2
f2f1
f2f3
g2f1
g2e4
g2f3
g2h1
h3h4
a4b5
a4a5
f4f5
g4g5

## Board State Fen
r2q1b1r/1b1knppp/p2p4/1p1P4/P4PP1/7P/1PP2QB1/R1B1R1K1 w - - 1 18
assistant
c1d2