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
b5b4
a6a5
c7a7
c7b7
c7c5
c7c6
d7c5
d7b6
d7b8
d7f6
d7f8
e7f8
e7f7
e7f6
e7e8
e7d8
g7g5
g7g6
c8a8
c8b8
c8h8
c8g8
c8f8
c8e8
c8d8

## Board State Fen
2r5/2rnk1p1/p3p2p/1p2p2P/2p1P2N/2P1R3/1P1R1PP1/5K2 b - - 1 31
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
b5b4
a6a5
c7a7
c7b7
c7c5
c7c6
d7c5
d7b6
d7b8
d7f6
d7f8
e7f8
e7f7
e7f6
e7e8
e7d8
g7g5
g7g6
c8a8
c8b8
c8h8
c8g8
c8f8
c8e8
c8d8

## Board State Fen
2r5/2rnk1p1/p3p2p/1p2p2P/2p1P2N/2P1R3/1P1R1PP1/5K2 b - - 1 31
assistant
e7e8