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
b3b2
e6e5
f7f5
f7f6
g7g5
g7g6
h7h5
h7h6
a8a7
a8b8
c8b6
c8d6
c8a7
c8e7
e8a4
e8b5
e8c6
e8d7
f8g8

## Board State Fen
r1n1bk2/R4ppp/4p3/3p4/3P2PP/1p1NPP2/3N1K2/R7 b - - 0 27
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
b3b2
e6e5
f7f5
f7f6
g7g5
g7g6
h7h5
h7h6
a8a7
a8b8
c8b6
c8d6
c8a7
c8e7
e8a4
e8b5
e8c6
e8d7
f8g8

## Board State Fen
r1n1bk2/R4ppp/4p3/3p4/3P2PP/1p1NPP2/3N1K2/R7 b - - 0 27
assistant
a8a7