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
f6d4
f6e5
f6e7
f6h4
f6g5
f6a6
f6b6
f6c6
f6d6
f6e6
f6f2
f6f3
f6f4
f6f5
f6h6
f6g6
a7a5
a7a6
b7b5
b7b6
g7g5
g7g6
h7h5
h7h6
d8a8
d8b8
d8c8
d8d4
d8d5
d8d6
d8d7
d8e8
f8e8
g8h8

## Board State Fen
3r1rk1/pp3ppp/5q2/8/3P4/P7/1P2QPPP/3R1RK1 b - - 2 19
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
f6d4
f6e5
f6e7
f6h4
f6g5
f6a6
f6b6
f6c6
f6d6
f6e6
f6f2
f6f3
f6f4
f6f5
f6h6
f6g6
a7a5
a7a6
b7b5
b7b6
g7g5
g7g6
h7h5
h7h6
d8a8
d8b8
d8c8
d8d4
d8d5
d8d6
d8d7
d8e8
f8e8
g8h8

## Board State Fen
3r1rk1/pp3ppp/5q2/8/3P4/P7/1P2QPPP/3R1RK1 b - - 2 19
assistant
d8d4