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
c5c4
e5e4
a6a5
c6b4
c6d4
c6d8
c6a5
c6a7
c6e7
f6d8
f6e7
f6h4
f6g5
g7g5
g7g6
h7h5
h7h6
b8a8
b8b2
b8b3
b8b4
b8b5
b8b6
b8b7
b8d8
b8c8
e8d7
e8c8
e8d8
e8e6
e8e7
g8h8

## Board State Fen
1r2qrk1/5ppp/p1np1b2/2pPp3/P7/2BP4/1P1N1PPP/R2QR1K1 b - - 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
c5c4
e5e4
a6a5
c6b4
c6d4
c6d8
c6a5
c6a7
c6e7
f6d8
f6e7
f6h4
f6g5
g7g5
g7g6
h7h5
h7h6
b8a8
b8b2
b8b3
b8b4
b8b5
b8b6
b8b7
b8d8
b8c8
e8d7
e8c8
e8d8
e8e6
e8e7
g8h8

## Board State Fen
1r2qrk1/5ppp/p1np1b2/2pPp3/P7/2BP4/1P1N1PPP/R2QR1K1 b - - 0 21
assistant
c6e7