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
d7c5
d7e5
d7b6
d7b8
d7f6
e4b1
e4c2
e4d3
e4f3
e4f5
b7b5
b7b6
e6e5
a8a6
a8a7
a8c8
a8b8
h7h5
h7h6
f7f5
f7f6
g6g5
d5c4
g7d4
g7e5
g7f6
g7h6
g7h8
a5a4
c6c5
d8b6
d8c7
d8h4
d8g5
d8f6
d8e7
d8b8
d8c8
d8e8
f8e8
g8h8

## Board State Fen
r2q1rk1/1p1n1pbp/2p1p1p1/p2p4/2PPb3/1PB1PNP1/P3QP1P/R2R1BK1 b - - 1 14
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
d7c5
d7e5
d7b6
d7b8
d7f6
e4b1
e4c2
e4d3
e4f3
e4f5
b7b5
b7b6
e6e5
a8a6
a8a7
a8c8
a8b8
h7h5
h7h6
f7f5
f7f6
g6g5
d5c4
g7d4
g7e5
g7f6
g7h6
g7h8
a5a4
c6c5
d8b6
d8c7
d8h4
d8g5
d8f6
d8e7
d8b8
d8c8
d8e8
f8e8
g8h8

## Board State Fen
r2q1rk1/1p1n1pbp/2p1p1p1/p2p4/2PPb3/1PB1PNP1/P3QP1P/R2R1BK1 b - - 1 14
assistant
b7b5