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
c6a4
c6b5
c6f3
c6e4
c6d5
c6e8
c6d7
d6e5
d6d5
e6d4
e6c5
e6c7
e6g5
e6g7
g6g5
b7b5
b7b6
h7h5
h7h6
c8a8
c8b8
c8c7
d8a5
d8b6
d8c7
d8d7
d8e8
f8e8
f8f5
f8f6
f8f7
g8h8
g8g7
g8f7

## Board State Fen
2rq1rk1/1p2p2p/p1bpn1p1/P3P3/2PB1p2/2N2P2/1PQ3PP/R2R2K1 b - - 0 19
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
c6a4
c6b5
c6f3
c6e4
c6d5
c6e8
c6d7
d6e5
d6d5
e6d4
e6c5
e6c7
e6g5
e6g7
g6g5
b7b5
b7b6
h7h5
h7h6
c8a8
c8b8
c8c7
d8a5
d8b6
d8c7
d8d7
d8e8
f8e8
f8f5
f8f6
f8f7
g8h8
g8g7
g8f7

## Board State Fen
2rq1rk1/1p2p2p/p1bpn1p1/P3P3/2PB1p2/2N2P2/1PQ3PP/R2R2K1 b - - 0 19
assistant
e6d4