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
a8a7
a8b8
h7h5
h7h6
g7g5
g7g6
b7b5
b7b6
f6f5
c8b6
c8d6
c8a7
c8e7
d8a5
d8b6
d8c7
d8e7
d8d5
d8d6
d8d7
e8e2
e8e3
e8e4
e8e5
e8e6
e8e7
f8c5
f8d6
f8e7
g8h8
g8f7

## Board State Fen
r1nqrbk1/1p4pp/p1p2p2/P1N5/1P1p4/3P2P1/3BPPKP/2RQR3 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
a8a7
a8b8
h7h5
h7h6
g7g5
g7g6
b7b5
b7b6
f6f5
c8b6
c8d6
c8a7
c8e7
d8a5
d8b6
d8c7
d8e7
d8d5
d8d6
d8d7
e8e2
e8e3
e8e4
e8e5
e8e6
e8e7
f8c5
f8d6
f8e7
g8h8
g8f7

## Board State Fen
r1nqrbk1/1p4pp/p1p2p2/P1N5/1P1p4/3P2P1/3BPPKP/2RQR3 b - - 0 20
assistant
d8d5