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
c6b4
c6b8
c6d4
c6a5
g7g5
g7g6
f7f5
f7f6
b7b6
e7d5
e7f5
e7g6
e7g8
d7d5
d7d6
a7a5
a7a6
h7h5
h7h6
a8b8
h8g8

## Board State Fen
r1bqkb1r/ppppnppp/2n5/1B2p3/4P3/2N2N2/PPPP1PPP/R1BQK2R b KQkq - 5 4
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
c6b4
c6b8
c6d4
c6a5
g7g5
g7g6
f7f5
f7f6
b7b6
e7d5
e7f5
e7g6
e7g8
d7d5
d7d6
a7a5
a7a6
h7h5
h7h6
a8b8
h8g8

## Board State Fen
r1bqkb1r/ppppnppp/2n5/1B2p3/4P3/2N2N2/PPPP1PPP/R1BQK2R b KQkq - 5 4
assistant
c6d4