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
b6b5
c6c5
h6h5
a7a5
a7a6
d7g4
d7f5
d7e6
d7e8
g7g5
g7g6
a8b8
c8b8
c8b7
h8d8
h8e8
h8f8
h8g8
h8h7

## Board State Fen
r1k4r/p1pb1Np1/1pp4p/4P3/6P1/7P/PPP2P2/R2R2K1 b - - 0 17
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
b6b5
c6c5
h6h5
a7a5
a7a6
d7g4
d7f5
d7e6
d7e8
g7g5
g7g6
a8b8
c8b8
c8b7
h8d8
h8e8
h8f8
h8g8
h8h7

## Board State Fen
r1k4r/p1pb1Np1/1pp4p/4P3/6P1/7P/PPP2P2/R2R2K1 b - - 0 17
assistant
h8e8