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
c5d6
c5d5
c5b6
c5b5
a5a4

## Board State Fen
8/8/8/pPk5/8/1PK5/8/8 b - - 0 60
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
c5d6
c5d5
c5b6
c5b5
a5a4

## Board State Fen
8/8/8/pPk5/8/1PK5/8/8 b - - 0 60
assistant
c5b5