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
c4a4
c4b4
c4c3
c4d4
c4c8
c4c7
c4c6
c4c5
g5h6
g5f6
g5f5
b6a4
b6a8
b6c8
b6d7
a7a5
a7a6
f7f5
f7f6

## Board State Fen
8/pp3p2/1n1p4/3p2k1/2rP1N1p/R1P2K1P/P1P2P2/8 b - - 0 27
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
c4a4
c4b4
c4c3
c4d4
c4c8
c4c7
c4c6
c4c5
g5h6
g5f6
g5f5
b6a4
b6a8
b6c8
b6d7
a7a5
a7a6
f7f5
f7f6

## Board State Fen
8/pp3p2/1n1p4/3p2k1/2rP1N1p/R1P2K1P/P1P2P2/8 b - - 0 27
assistant
f7f6