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
c4a2
c4b3
c4b5
c4f1
c4e2
c4d3
c4d5
c4a4
c4b4
c4c1
c4c2
c4c3
c4h4
c4g4
c4f4
c4e4
c4d4
c4c8
c4c7
c4c6
c4c5
e5e4
a6a5
e6d5
e6c8
e6d7
e6h3
e6g4
e6f5
b7b5
b7b6
f7f5
f7f6
g7g5
g7g6
h7h5
h7h6
h8f8
h8g8

## Board State Fen
4k2r/1p3ppp/p3b3/4p3/N1q5/Q7/PP3PPP/3R3K b k - 0 20
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
c4a2
c4b3
c4b5
c4f1
c4e2
c4d3
c4d5
c4a4
c4b4
c4c1
c4c2
c4c3
c4h4
c4g4
c4f4
c4e4
c4d4
c4c8
c4c7
c4c6
c4c5
e5e4
a6a5
e6d5
e6c8
e6d7
e6h3
e6g4
e6f5
b7b5
b7b6
f7f5
f7f6
g7g5
g7g6
h7h5
h7h6
h8f8
h8g8

## Board State Fen
4k2r/1p3ppp/p3b3/4p3/N1q5/Q7/PP3PPP/3R3K b k - 0 20
assistant
c4c6