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
c5c4
e6e5
c7b7
c7c6
c7d7
e7d6
e7d8
e7h4
e7g5
e7f6
f7f5
f7f6
g7g5
g7g6
h7h5
h7h6
c8b6
c8d6
f8d8
f8e8
g8h8

## Board State Fen
2n2rk1/p1r1bppp/R3p3/2p5/8/2P1BBPP/1P2KP2/R7 b - - 2 25
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
c5c4
e6e5
c7b7
c7c6
c7d7
e7d6
e7d8
e7h4
e7g5
e7f6
f7f5
f7f6
g7g5
g7g6
h7h5
h7h6
c8b6
c8d6
f8d8
f8e8
g8h8

## Board State Fen
2n2rk1/p1r1bppp/R3p3/2p5/8/2P1BBPP/1P2KP2/R7 b - - 2 25
assistant
c5c4