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
c6b4
c6b8
c6d4
c6a5
c6a7
c6e5
c6e7
c5b3
c5d3
c5d7
c5a4
c5e4
g6g5
e6e5
d6d5
a6a5
b7b5
b7b6
f7f5
f7f6
g7c3
g7d4
g7e5
g7f6
g7f8
g7h6
g7h8
h7h5
h7h6
c8a8
c8b8
c8c7
d8d7
d8f8
d8e8
g8h8
g8f8

## Board State Fen
2rr2k1/1p3pbp/p1npp1p1/2n5/2P1P3/2N2P1P/PP4P1/1R1RBBK1 b - - 2 21
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
c6b4
c6b8
c6d4
c6a5
c6a7
c6e5
c6e7
c5b3
c5d3
c5d7
c5a4
c5e4
g6g5
e6e5
d6d5
a6a5
b7b5
b7b6
f7f5
f7f6
g7c3
g7d4
g7e5
g7f6
g7f8
g7h6
g7h8
h7h5
h7h6
c8a8
c8b8
c8c7
d8d7
d8f8
d8e8
g8h8
g8f8

## Board State Fen
2rr2k1/1p3pbp/p1npp1p1/2n5/2P1P3/2N2P1P/PP4P1/1R1RBBK1 b - - 2 21
assistant
g7d4