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
a5b3
a5b7
a5c4
a5c6
b5b1
b5b2
b5b3
b5b4
b5b8
b5b7
b5b6
c5c4
c7b6
c7b8
c7d6
c7d8
g7g5
g7g6
h7h5
h7h6
e8a8
e8b8
e8c8
e8d8
e8e7
e8f8
g8h8
g8f8

## Board State Fen
4r1k1/2b3pp/p2Np3/nrp1p3/R3P3/2PPN3/5PPP/3R2K1 b - - 0 26
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
a5b3
a5b7
a5c4
a5c6
b5b1
b5b2
b5b3
b5b4
b5b8
b5b7
b5b6
c5c4
c7b6
c7b8
c7d6
c7d8
g7g5
g7g6
h7h5
h7h6
e8a8
e8b8
e8c8
e8d8
e8e7
e8f8
g8h8
g8f8

## Board State Fen
4r1k1/2b3pp/p2Np3/nrp1p3/R3P3/2PPN3/5PPP/3R2K1 b - - 0 26
assistant
c7d6