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
a7a5
a7a6
a7h7
a7g7
a7f7
a7e7
a7d7
a7c7
a7b7
a7a8
g2h2
g2h1
g2g1
g2f3
g2f1
f2f4
f2f3

## Board State Fen
8/R7/1r3pp1/p3p1k1/4P1Pp/7P/5PK1/8 w - - 0 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
a7a5
a7a6
a7h7
a7g7
a7f7
a7e7
a7d7
a7c7
a7b7
a7a8
g2h2
g2h1
g2g1
g2f3
g2f1
f2f4
f2f3

## Board State Fen
8/R7/1r3pp1/p3p1k1/4P1Pp/7P/5PK1/8 w - - 0 42
assistant
a7a5