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
a6a5
c6a4
c6b5
c6e4
c6d5
c6e8
c6d7
c6b6
c6c4
c6c5
c6c7
d6d5
e6e5
f6e4
f6e8
f6g4
f6d5
f6d7
f6h5
f6h7
h6h5
b7b5
b7b6
e7d8
g7g5
g7g6
c8a8
c8b8
c8c7
c8e8
c8d8
f8d8
f8e8
g8h8
g8h7

## Board State Fen
2r2rk1/1p2bpp1/p1qppn1p/8/2P1P3/1PNQB3/P4PPP/2R2RK1 b - - 1 16
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
a6a5
c6a4
c6b5
c6e4
c6d5
c6e8
c6d7
c6b6
c6c4
c6c5
c6c7
d6d5
e6e5
f6e4
f6e8
f6g4
f6d5
f6d7
f6h5
f6h7
h6h5
b7b5
b7b6
e7d8
g7g5
g7g6
c8a8
c8b8
c8c7
c8e8
c8d8
f8d8
f8e8
g8h8
g8h7

## Board State Fen
2r2rk1/1p2bpp1/p1qppn1p/8/2P1P3/1PNQB3/P4PPP/2R2RK1 b - - 1 16
assistant
f6g4