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
c6c5
h6d6
h6e6
h6f6
h6g6
h6h1
h6h2
h6h3
h6h4
h6h5
h6h8
h6h7
a7a5
a7a6
c7d7
c7d6
c7b7
c7b6

## Board State Fen
R7/p1k5/2p4r/1p6/1P1P4/2K5/8/8 b - - 10 74
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
c6c5
h6d6
h6e6
h6f6
h6g6
h6h1
h6h2
h6h3
h6h4
h6h5
h6h8
h6h7
a7a5
a7a6
c7d7
c7d6
c7b7
c7b6

## Board State Fen
R7/p1k5/2p4r/1p6/1P1P4/2K5/8/8 b - - 10 74
assistant
c7b7