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
b8a8
b8h8
b8g8
b8f8
b8e8
b8d8
b8c8
b7a7
b7b5
b7b6
b7e7
b7d7
b7c7
g7h8
g7h7
g7h6
g7g8
g7f8
g6g5
f7f5
f7f6
h5h4
e6d4
e6d8
e6f4
e6f8
e6c5
e6c7
e6g5
b4b3

## Board State Fen
1r6/1r3pk1/4n1p1/3N3p/1pR5/3R1P2/1KP3PP/8 b - - 13 35
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
b8a8
b8h8
b8g8
b8f8
b8e8
b8d8
b8c8
b7a7
b7b5
b7b6
b7e7
b7d7
b7c7
g7h8
g7h7
g7h6
g7g8
g7f8
g6g5
f7f5
f7f6
h5h4
e6d4
e6d8
e6f4
e6f8
e6c5
e6c7
e6g5
b4b3

## Board State Fen
1r6/1r3pk1/4n1p1/3N3p/1pR5/3R1P2/1KP3PP/8 b - - 13 35
assistant
b7b5