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
c7b5
c7d5
c7a6
c7a8
c7e8
e6f7
e6d7
e6d6
e6d5
a7a5
a7a6
f5f4
b4b3

## Board State Fen
8/p1n1p3/4kp2/5p2/1p1P4/8/PP1B1PP1/5K2 b - - 4 36
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
c7b5
c7d5
c7a6
c7a8
c7e8
e6f7
e6d7
e6d6
e6d5
a7a5
a7a6
f5f4
b4b3

## Board State Fen
8/p1n1p3/4kp2/5p2/1p1P4/8/PP1B1PP1/5K2 b - - 4 36
assistant
a7a5