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
g6f4
g6f8
g6h4
g6h8
g6e5
g6e7
h6h5
a7c5
a7b6
a7b8
b7b5
b7b6
f7c7
f7d7
f7e7
f7f3
f7f4
f7f5
f7f6
f7f8
a8b8
c8h3
c8g4
c8f5
c8e6
c8d7
d8a5
d8b6
d8c7
d8h4
d8g5
d8f6
d8e7
d8d6
d8d7
d8f8
d8e8
g8h8
g8h7
g8f8

## Board State Fen
r1bq2k1/bp3rp1/p1p3np/2Np4/PP1P4/R4N1P/5PP1/2BQR1K1 b - - 1 17
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
g6f4
g6f8
g6h4
g6h8
g6e5
g6e7
h6h5
a7c5
a7b6
a7b8
b7b5
b7b6
f7c7
f7d7
f7e7
f7f3
f7f4
f7f5
f7f6
f7f8
a8b8
c8h3
c8g4
c8f5
c8e6
c8d7
d8a5
d8b6
d8c7
d8h4
d8g5
d8f6
d8e7
d8d6
d8d7
d8f8
d8e8
g8h8
g8h7
g8f8

## Board State Fen
r1bq2k1/bp3rp1/p1p3np/2Np4/PP1P4/R4N1P/5PP1/2BQR1K1 b - - 1 17
assistant
d8f6