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
c5a3
c5b4
c5f2
c5e3
c5d4
c5e7
c5d6
a6a5
b6b5
f6e4
f6g4
f6d5
f6d7
f6h5
f6h7
h6h5
b7a5
b7d6
b7d8
g7g5
g7g6
e8a8
e8b8
e8c8
e8d8
e8e7
g8h8
g8h7

## Board State Fen
4rrk1/1n3pp1/ppN1pn1p/2b1P3/2p2B2/2N3P1/PP3P1P/2RR2K1 b - - 0 20
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
c5a3
c5b4
c5f2
c5e3
c5d4
c5e7
c5d6
a6a5
b6b5
f6e4
f6g4
f6d5
f6d7
f6h5
f6h7
h6h5
b7a5
b7d6
b7d8
g7g5
g7g6
e8a8
e8b8
e8c8
e8d8
e8e7
g8h8
g8h7

## Board State Fen
4rrk1/1n3pp1/ppN1pn1p/2b1P3/2p2B2/2N3P1/PP3P1P/2RR2K1 b - - 0 20
assistant
f6d5