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
c5c4
a6a5
c6b6
c6h6
c6g6
c6f6
c6e6
c6d6
c6c8
c6c7
e7d5
e7f5
e7c8
e7g6
f7f5
f7f6
g7g5
g7g6
h7h5
h7h6
d8a8
d8b8
d8c8
d8d3
d8d4
d8d5
d8d6
d8d7
d8f8
d8e8
g8h8
g8f8

## Board State Fen
3r2k1/4nppp/p1r5/1pp5/5N2/1P1P1P1P/1PP2P2/R3RK2 b - - 2 25
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
c5c4
a6a5
c6b6
c6h6
c6g6
c6f6
c6e6
c6d6
c6c8
c6c7
e7d5
e7f5
e7c8
e7g6
f7f5
f7f6
g7g5
g7g6
h7h5
h7h6
d8a8
d8b8
d8c8
d8d3
d8d4
d8d5
d8d6
d8d7
d8f8
d8e8
g8h8
g8f8

## Board State Fen
3r2k1/4nppp/p1r5/1pp5/5N2/1P1P1P1P/1PP2P2/R3RK2 b - - 2 25
assistant
e7f5