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
a4a5
c4b2
c4b6
c4d2
c4d6
c4a3
c4a5
c4e3
c4e5
a6b7
a6b5
a6a5
c7a7
c7b7
c7c5
c7c6
c7h7
c7g7
c7f7
c7e7
c7d7
c7c8

## Board State Fen
5k2/2R5/K7/8/P1N5/8/5q2/8 w - - 1 50
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
a4a5
c4b2
c4b6
c4d2
c4d6
c4a3
c4a5
c4e3
c4e5
a6b7
a6b5
a6a5
c7a7
c7b7
c7c5
c7c6
c7h7
c7g7
c7f7
c7e7
c7d7
c7c8

## Board State Fen
5k2/2R5/K7/8/P1N5/8/5q2/8 w - - 1 50
assistant
a4a5