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
f6a6
f6b6
f6c6
f6d6
f6e6
f6f5
f6h6
f6g6
h7h6
h7g7
h7g6

## Board State Fen
5R2/5p1k/P4r2/8/5p2/5K2/8/8 b - - 2 39
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
f6a6
f6b6
f6c6
f6d6
f6e6
f6f5
f6h6
f6g6
h7h6
h7g7
h7g6

## Board State Fen
5R2/5p1k/P4r2/8/5p2/5K2/8/8 b - - 2 39
assistant
f6a6