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
f1b1
f1c1
f1d1
f1e1
g1h1
a2a4
a2a3
d2c1
d2a5
d2b4
d2c3
d2e1
d2e3
g2g4
g2g3
h2h4
h2h3
f3e1
f3e5
f3g5
f3d4
f3h4
f4e3
f4c7
f4d6
f4e5
f4g3
f4h6
f4g5
f4a4
f4b4
f4c4
f4d4
f4e4
f4h4
f4g4
f4f5
c5c6

## Board State Fen
r5k1/1bp1q1bp/4p3/2P2p2/5Q2/5N2/P2B1PPP/1r3RK1 w - - 0 21
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
f1b1
f1c1
f1d1
f1e1
g1h1
a2a4
a2a3
d2c1
d2a5
d2b4
d2c3
d2e1
d2e3
g2g4
g2g3
h2h4
h2h3
f3e1
f3e5
f3g5
f3d4
f3h4
f4e3
f4c7
f4d6
f4e5
f4g3
f4h6
f4g5
f4a4
f4b4
f4c4
f4d4
f4e4
f4h4
f4g4
f4f5
c5c6

## Board State Fen
r5k1/1bp1q1bp/4p3/2P2p2/5Q2/5N2/P2B1PPP/1r3RK1 w - - 0 21
assistant
f1b1