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
a3a1
a3a2
a3h3
a3g3
a3f3
a3e3
a3d3
a3c3
a3b3
a3a4
a6a5
b6b5
h6h5
g7g5
g7g6
g8h8
g8h7
g8f8
g8f7

## Board State Fen
6k1/6p1/ppR4p/8/PP6/r6P/5KP1/8 b - - 12 42
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
a3a1
a3a2
a3h3
a3g3
a3f3
a3e3
a3d3
a3c3
a3b3
a3a4
a6a5
b6b5
h6h5
g7g5
g7g6
g8h8
g8h7
g8f8
g8f7

## Board State Fen
6k1/6p1/ppR4p/8/PP6/r6P/5KP1/8 b - - 12 42
assistant
a3a4