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
a2a1
a2g2
a2f2
a2e2
a2d2
a2c2
a2b2
a2a8
a2a7
a2a6
a2a5
a2a4
a2a3
h5h4
e6e5
b7b5
b7b6
c7a5
c7b6
c7b8
c7h2
c7g3
c7f4
c7e5
c7d6
c7d8
d7e8
d7e7
d7d8
d7c8

## Board State Fen
8/1pbk4/4p3/2P4p/8/1K3B2/r5P1/7R b - - 1 41
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
a2a1
a2g2
a2f2
a2e2
a2d2
a2c2
a2b2
a2a8
a2a7
a2a6
a2a5
a2a4
a2a3
h5h4
e6e5
b7b5
b7b6
c7a5
c7b6
c7b8
c7h2
c7g3
c7f4
c7e5
c7d6
c7d8
d7e8
d7e7
d7d8
d7c8

## Board State Fen
8/1pbk4/4p3/2P4p/8/1K3B2/r5P1/7R b - - 1 41
assistant
a2a7