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
a3e3
a3d3
a3c3
a3b3
a3a8
a3a7
a3a6
a3a5
a3a4
f3g4
f3g3
f3g2
f3f2
f3e3
f3e2
e4e5
f4f5

## Board State Fen
8/5p2/4k1p1/6P1/1r2PP2/R4K2/8/8 w - - 1 75
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
a3e3
a3d3
a3c3
a3b3
a3a8
a3a7
a3a6
a3a5
a3a4
f3g4
f3g3
f3g2
f3f2
f3e3
f3e2
e4e5
f4f5

## Board State Fen
8/5p2/4k1p1/6P1/1r2PP2/R4K2/8/8 w - - 1 75
assistant
a3a6