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
c7c5
c7c6
f7f5
f7f6
a7a5
a7a6
g7g5
g7g6
h7h5
h7h6
c8a6
c8b7
c8h3
c8g4
c8f5
c8e6
c8d7
d8d1
d8d2
d8d3
d8d4
d8d5
d8d6
d8d7
d8e8
f8g8
f8e8
f8e7

## Board State Fen
1Rbr1k2/p1p2ppp/8/8/8/5B2/P1P2PPP/6K1 b - - 4 18
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
c7c5
c7c6
f7f5
f7f6
a7a5
a7a6
g7g5
g7g6
h7h5
h7h6
c8a6
c8b7
c8h3
c8g4
c8f5
c8e6
c8d7
d8d1
d8d2
d8d3
d8d4
d8d5
d8d6
d8d7
d8e8
f8g8
f8e8
f8e7

## Board State Fen
1Rbr1k2/p1p2ppp/8/8/8/5B2/P1P2PPP/6K1 b - - 4 18
assistant
d8e8