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
a5a1
a5a2
a5a3
a5a4
a5c5
a5b5
a5a6
d5d4
d6e6
d6c6
d6c5
g6g5
a7a6

## Board State Fen
8/p4R2/3k2p1/r2p3p/5P1P/3KP3/5P2/8 b - - 0 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
a5a1
a5a2
a5a3
a5a4
a5c5
a5b5
a5a6
d5d4
d6e6
d6c6
d6c5
g6g5
a7a6

## Board State Fen
8/p4R2/3k2p1/r2p3p/5P1P/3KP3/5P2/8 b - - 0 36
assistant
a5a3