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
c1b1
c1h1
c1g1
c1f1
c1e1
c1d1
c1c6
c1c5
c1c4
c1c3
c1c2
e3e4
h2h4
h2h3
g2h3
g2h1
g2g1
g2f1
a2a3
a1b1
f3d1
f3e2
f3d5
f3e4
f3h5
f3g4
g3g4
a4d1
a4c2
a4b3
a4c6
a4b5
a4a3
a4c4
a4b4
a4a7
a4a6
a4a5
f4e2
f4e6
f4g6
f4d3
f4d5
f4h3
f4h5

## Board State Fen
6k1/p1rqbppp/2n1p3/3p4/Q2P1N2/4PBP1/Pr3PKP/R1R5 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
c1b1
c1h1
c1g1
c1f1
c1e1
c1d1
c1c6
c1c5
c1c4
c1c3
c1c2
e3e4
h2h4
h2h3
g2h3
g2h1
g2g1
g2f1
a2a3
a1b1
f3d1
f3e2
f3d5
f3e4
f3h5
f3g4
g3g4
a4d1
a4c2
a4b3
a4c6
a4b5
a4a3
a4c4
a4b4
a4a7
a4a6
a4a5
f4e2
f4e6
f4g6
f4d3
f4d5
f4h3
f4h5

## Board State Fen
6k1/p1rqbppp/2n1p3/3p4/Q2P1N2/4PBP1/Pr3PKP/R1R5 w - - 0 21
assistant
f4d3