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
h5h4
b5a4
b5b4
b6a5
b6a7
b6d4
b6c5
b6d8
b6c7
c6c5
b7c8
d7c5
d7e5
d7b8
d7f6
d7f8
e7a3
e7b4
e7c5
e7d6
e7d8
e7h4
e7g5
e7f6
e7f8
f7f5
f7f6
g7g5
g7g6
a8a7
a8d8
a8c8
a8b8
e8g8
e8c8
e8f8
e8d8
h8f8
h8g8
h8h6
h8h7

## Board State Fen
r3k2r/1b1nbpp1/pqp1p3/1p2P2p/P1pP1P2/2P1N1P1/6BP/R1BQ1RK1 b kq - 1 15
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
h5h4
b5a4
b5b4
b6a5
b6a7
b6d4
b6c5
b6d8
b6c7
c6c5
b7c8
d7c5
d7e5
d7b8
d7f6
d7f8
e7a3
e7b4
e7c5
e7d6
e7d8
e7h4
e7g5
e7f6
e7f8
f7f5
f7f6
g7g5
g7g6
a8a7
a8d8
a8c8
a8b8
e8g8
e8c8
e8f8
e8d8
h8f8
h8g8
h8h6
h8h7

## Board State Fen
r3k2r/1b1nbpp1/pqp1p3/1p2P2p/P1pP1P2/2P1N1P1/6BP/R1BQ1RK1 b kq - 1 15
assistant
g7g6