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
a4a1
a4a2
a4a3
a4g4
a4f4
a4e4
a4d4
a4c4
a4b4
a4a8
a4a7
a4a6
a4a5
h3f1
h3g2
h3c8
h3d7
h3e6
h3f5
h3g4
g5g4
h4g3

## Board State Fen
8/8/6R1/3KP1pp/r6k/4N2b/8/8 b - - 4 60
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
a4a1
a4a2
a4a3
a4g4
a4f4
a4e4
a4d4
a4c4
a4b4
a4a8
a4a7
a4a6
a4a5
h3f1
h3g2
h3c8
h3d7
h3e6
h3f5
h3g4
g5g4
h4g3

## Board State Fen
8/8/6R1/3KP1pp/r6k/4N2b/8/8 b - - 4 60
assistant
a4a3