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
a2a4
a2a3
d3e2
d3d2
d3c2
e4e5
h7a7
h7b7
h7c7
h7d7
h7e7
h7f7
h7g7
h7h1
h7h2
h7h3
h7h4
h7h5
h7h6
h7h8

## Board State Fen
8/7R/p1p1kp2/1pP3p1/2r1P1P1/2PKP3/P7/8 w - - 3 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
a2a4
a2a3
d3e2
d3d2
d3c2
e4e5
h7a7
h7b7
h7c7
h7d7
h7e7
h7f7
h7g7
h7h1
h7h2
h7h3
h7h4
h7h5
h7h6
h7h8

## Board State Fen
8/7R/p1p1kp2/1pP3p1/2r1P1P1/2PKP3/P7/8 w - - 3 42
assistant
a2a4